Chile ? Former Peruvian President Alberto Fujimori was arrested Monday on charges involving corruption and massacres at home as he tried to return to Peru to run for re-election after five years in exile in Japan.

Fujimori, target of an international arrest warrant, now faces extradition from Chile to Peru.

Police arrested Fujimori, 67, at his Santiago hotel hours after his surprise arrival Sunday and took him to the investigative police academy. The arrest was ordered after the Peruvian government told Chile it would make a formal request for Fujimori’s extradition.

He asked to be granted provisional freedom during the extradition proceedings.

Later Monday, Fujimori was transferred to a training academy for corrections officers. He smiled at reporters, responding to shouted questions by waving his hand and giving a thumbs-up sign.

Fujimori fled to Japan in November 2000 as his 10-year autocratic government crumbled amid corruption scandals. He faces 21 charges ranging from abuse of power and corruption to sanctioning a paramilitary death squad accused of two massacres of suspected rebel collaborators in which 25 people were killed, including an 8-year-old boy.