Video footage from the predominantly Kurdish city showed ambulances and emergency workers responding to the scene after the blast, which occurred around 5 p.m. local time (10 a.m. Eastern).
As of 11:35 a.m. Eastern, no group has claimed responsibility for the blast. Turkey has been rocked by a series of deadly attacks over the past year, beginning with a car bomb detonated in Ankara last June and two explosions earlier this month.
This story is developing and will be updated as more information becomes available.
March 31, 11:20 a.m.: This story has been updated.