ANKARA, Turkey (AP) — A bomb mounted on a motorbike went off near the country's ruling party offices in Istanbul on Thursday, injuring five policemen, state-run television said.
A vehicle and a police bus were damaged in the explosion near the office of Prime Minister Recep Tayyip Erdogan's Justice and Development Party, where one policeman was killed in a bomb attack last year.
Several ambulances rushed to the scene of the bombing in Istanbul's Sutluce district, televisions showed.
There was no initial claim of responsibility, but Kurdish rebels, fighting for autonomy in the country's southeast, have staged bomb attacks using bicycles in the past.
Leftist and radical Islamic militants are also active in Istanbul.