Blast at Turkish political office

Six people have been injured by a blast outside an office belonging to Turkey's ruling party in Istanbul.

City Governor Muammer Guler said the explosion may have been caused by a parcel bomb.

Police were examining security TV footage for clues as to who planted the bomb, which exploded at around 1500 (1300 GMT), he said.

The injured included four policemen and two workers for Prime Minister Recep Tayyip Erdogan's AK Party.

The office, in the Sutluce district of the city, was busy as party officials were meeting to deal with applications for municipal elections.

Bombings are not uncommon in Istanbul, with Kurdish, Islamist and leftist militants all having been blamed in the past.