Madrid, Spain (CNN) -- Carlos Vielmann, a former Guatemalan interior minister wanted on charges of extrajudicial killings, turned himself in to authorities in Spain Thursday morning, his attorney told CNN.
An arrest warrant for Vielmann was issued by Spanish authorities Wednesday night, attorney Francisco Palomo said.
Vielmann is facing charges in both Spain and Guatemala stemming from the same incident, a 2006 uprising at the El Pavon prison in Guatemala where seven inmates were killed.
The Interior Ministry and police said at the time that the prisoners were killed during a violent confrontation with prison authorities. However, a report by the Guatemalan Human Rights Ombudsman's Office concluded the prisoners had been executed. CNN