Updated

A U.S. official in Rwanda confirms that a notorious Congolese general wanted for war crimes remains ensconced at the United States Embassy in Kigali, a day after he turned himself in, saying he wanted to be extradited to the International Criminal Court.

The official, who insisted on anonymity because she was not authorized to speak on the matter, said Bosco Ntaganda arrived at the embassy at 7:30 a.m. Monday. He remained at the embassy on Tuesday, as speculation mounted regarding his unexpected surrender.

Ntaganda was first indicted in 2006 by the International Criminal Court for conscripting and using child soldiers during a conflict from 2002 to 2003 in Congo's eastern Ituri province. A second arrest warrant, issued last July, accused him of a range of crimes including murder and rape.