NEW YORK (AP) — They were promised a place to mourn their loved ones, display their photographs and educate their children and the children of strangers about exactly what was lost on 9/11. But today, family members of those killed have no completion date for the museum that is to be built alongside the Sept. 11 memorial at ground zero — and many are upset.

“The memorial is open, but that’s only half the tribute to those who were killed,” said Patricia Reilly, who lost her sister in the attacks. “The museum is the place where they’re going to tell the story about the people — who they were, where they were, what they were doing and what happened to them that day.”

Construction of the museum — originally scheduled to open on the 11th anniversary of the attacks — has largely ground to a halt amid a financial dispute between the Port Authority of New York and New Jersey, which owns the site, and the foundation that controls the memorial and museum. After months of little obvious progress, some family members are increasingly worried that the powers that share control of the area are backsliding into the kind of politically driven dysfunction that once paralyzed the site.

“They shouldn’t allow disagreement to get in the way,” said Reilly, who especially wants the museum to be completed so she can go there to visit the thousands of fragments of human remains too damaged to identify with DNA testing. No trace of her sister, Lorraine Lee, who worked on the 101st floor of the World Trade Center’s south tower, has been identified.

“We were supposed to get a contemplative area nearby where we could sit and pray, visit,” she said. “I’m waiting for the remains to find their final resting place.”

Work has been slowed since late last year, when the subcontractors at the site stopped getting paid. The Port Authority claimed the Sept. 11 memorial foundation owed it $300 million for infrastructure and revised project costs, while the foundation argued the port instead owed it money because of project delays. Three powerful political figures have been entangled in the dispute: The governors of New York and New Jersey control the port, while New York City Mayor Michael Bloomberg is the foundation’s chairman.

Last month, Port Authority Executive Director Patrick Foye said there had been “significant progress” toward a resolution, but any deal has yet to materialize. On Thursday, a spokesman for the port would say only that discussions were continuing. A spokesman for the foundation declined to comment about the families’ concerns.

Officials have said publicly there is no way to complete the museum by this year’s anniversary of the attacks, but no formal communication has gone out to the families to inform them of the delays and keep them apprised, some family members said.

In the meantime, personal items and mementos that families have donated to the museum are in a sort of limbo, with many wrapped and packed away in storage spaces that hold everything from damaged fire engines to children’s drawings.

“There are people out there … who hold these items as very, very precious,” said Debra Burlingame, a foundation board member whose own family’s donation has been put on hold until the dispute is resolved. They will donate a prayer card that her brother was carrying when his plane flew into the Pentagon. Somehow, the small card survived the fire, inscribed with the words “Blessed are those who mourn.”

Burlingame wants to make sure her brother’s story survives.

“You have children who were very young on 9/11 or maybe not even born yet who have no idea what actually happened that day,” she said. “That story needs to be told, and it needs to be preserved for future generations.”

The subcontractors at the site were recently paid $15 million that had been owed to them, but they won’t return to the job until there’s an agreement on future payment and a new schedule is adopted, said Ron Berger, the executive director of the Subcontractors Trade Association. Berger said this week his union is meeting with officials about future plans and he’s expecting a new completion date of June or July 2013 — a decision that would raise project costs further because of the overtime required. But no deal can be made until the port and the foundation come to an agreement.

For some family members, the problems at the 16-acre site feel like an unpleasant flashback. In 2005 and 2006, bitter negotiations between the Port Authority and private developer Larry Silverstein stalled construction on all the office towers planned for the site, with port officials calling Silverstein greedy for demanding givebacks on the rent he paid, and Silverstein saying the agency had never turned over buildable land for his office towers. In 2006, the memorial was redesigned after its projected cost rocketed and some began to question whether the project could move forward.

“It’s all politics, and it’s ridiculous,” said Jim Riches, whose firefighter son died in the trade center. “They should put politics aside and get down to business.”

Riches has given the museum the crushed helmet found next to his son’s body when it was unearthed six months after the attacks. He can ask for it back at any time, he notes, but he won’t — despite his frustration with the delays.

“Maybe 20 years from now, 50 years from now — they won’t know who I am, they won’t know who my son is,” Riches said. “But you know what? Some little kid is going to go in there and say, ‘Look at this, this fireman went in there to help people, and then he was crushed to death by these terrorists.’ … It’s a powerful message.”

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Associated Press writers Amy Westfeldt in New York and David Porter in Newark, N.J., contributed to this report.

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Follow Samantha Gross at www.twitter.com/samanthagross

NEW YORK (AP) — Moans, sighs and exclamations erupted Saturday as relatives of Sept. 11 victims watched four closed-circuit TV feeds from Guantanamo Bay, Cuba, that showed the self-proclaimed mastermind of the attacks and co-defendants trying to slow their arraignment, a move that drew outbursts from viewers of “c’mon, are you kidding me?”

“It’s actually a joke, it feels ridiculous,” said Jim Riches, whose firefighter son, Jimmy, died at the World Trade Center. Riches watched the hearing from a movie theater at Fort Hamilton in New York City, one of four U.S. military bases where the arraignment was broadcast live for victims’ family members, survivors and emergency personnel who responded to the attacks.

NEW YORK (AP) — A team of police officers and FBI agents are digging up a basement in Manhattan as part of a decades-old investigation into the disappearance of a 6-year-old boy.

The missing child is Etan Patz (AY’-tahn PAYTS), who vanished in 1979 after leaving his family’s SoHo home for a short walk to his school bus stop.

NYPD spokesman Paul Browne says the building being searched is about a block from where the family lived.

He says the excavation is the result of a recently-ordered review of the case by the Manhattan district attorney.

Investigators expect to be at the site for two to three days, examining a space that now sits beneath a clothing store.

Authorities didn’t say what evidence led them to that location.

NEW YORK (AP) — Supporters of the Occupy Wall Street movement celebrated its sixth month with a march from the New York City park that demonstrators seized last fall.

With the city’s attention focused on the huge St. Patrick’s Day Parade many blocks uptown, the Occupy rally at Zuccotti Park on Saturday drew a couple of hundred people — a far smaller crowd than the demonstrations seen in the city when the movement was at its peak.

The marchers left the park at around 1 p.m., heading down Broadway carrying signs and a large Statue of Liberty puppet. The crowd later returned to the plaza that had been the movement’s home until it was cleared of tents by police officers in November.

Police say there were arrests but don’t have a count yet.

NEW YORK (AP) — The city’s 911 operators are now able to give callers details about emergency events, reversing what the Sept. 11 Commission determined were flaws in a system that a decade ago denied people inside the burning World Trade Center potentially lifesaving information, officials said Thursday.

“Call takers now are given specific information dealing with a particular emergency so that they can transfer that information to callers much more quickly,” police Commissioner Raymond Kelly said at the formal launch of a new $680 million 911 call center.

NEW YORK (AP) — New York City’s 911 emergency operators now are able to give callers details about emergency events, reversing what the Sept. 11 Commission determined were flaws in a system that a decade ago denied people inside the burning World Trade Center potentially lifesaving information.

Mayor Michael Bloomberg and other city officials formally launched a new $680 million 911 call center Thursday.

The new technology at the center will give more information to the call takers, allowing officials to feed them information about emergencies and automatically showing them a map of the location of each caller.

The federal commission in 2004 concluded that on Sept. 11, 2001, the phone system’s operators were unaware that fire chiefs were evacuating the doomed twin towers because the city had no way of relaying that information.