A group of armed assailants stormed a local association in Eyüp district of Istanbul late Tuesday, killing one and wounding three others.

According to initial reports, three gunmen with long-barreled weapons opened fire on The Great Ottoman Social Assistance and Solidarity Association located in the Yeşilpınar neighborhood at around 10:00 p.m.

In the attack one person was killed, whereas three others were injured, with one in serious condition.

İsmail Bayram, 31, suffered serious wounds and lost his life during surgery in a private hospital in the district of Alibeyköy.

A taxi was also caught in the gunfire.

Meanwhile, police and armored vehicles were immediately dispatched to the scene, with security forces launching an air supported operation to capture the assailants.