Some 10 staffers of Iranian bank in Istanbul were wounded, four of them critically, by terrorist bombings in the city, the president of the bank told IRNA on Thursday.

President of the Istanbul Branch of Iran's "Mellat Bank" Younes Hormozian said the bank was adjacent to the point where the bombs went off, adding that the bombs had completely destroyed the building of the bank.

Hormozian also said that the Turkish police have launched a strict surveillance on the area.

The Mellat Bank has two other branches in Turkey's Izmir and Ankara. The Istanbul Branch of the bank is its main branch in Turkey.

Two huge explosions in Istanbul early Thursday killed at least 15 people and wounded 320 in what appeared to have been a terror attack on the British Consulate, the Turkish media reported.