Updated

A research assistant shot and killed four staff members at a university in central Turkey, the university's president said Thursday.

Prof. Hasan Gonen of Osmangazi University, in the city of Eskisehir, some 250 kilometers west of Ankara, told reporters that the gunman shot and killed a deputy dean, a secretary and two teaching staff.

Media reports said the gunman, identified as Volkan D., turned himself in to police after the attack.

The motive for the attack was not immediately known.

Hurriyet newspaper said three other people were wounded in the attack. There was no information on their conditions.

Relatives of the victims rushed to the university as soon as news of the attack broke.