He was a member of the Government Junta that ruled Chile from 1973 to 1990, representing the Army.
Pinochet ruled Chile with an iron fist from 1973-1990.
Pinochet ruled Chile after a military coup in 1973 until he was voted out in 1988.
The measure, agreed late on Wednesday, followed an Argentine extradition request for the former dictator, who ruled Chile from 1973 to 1990.
In 1990, after losing a plebiscite, the military junta that had ruled Chile since 1973 relinquished power to an elected government.
Together they established a military government that ruled Chile from 1973 until 1990.
The Spanish charges say at least 3,178 people were murdered or "disappeared" while General Pinochet ruled Chile.
The military government which ruled Chile from 1973 to 1990 was ousted in a national plebiscite in October 1988.
General Pinochet, now 85, ruled Chile until 1990.
From 1817 to 1823, Bernardo O'Higgins ruled Chile as supreme director.