LIMA, Peru, Nov 7 (Reuters) - Peruvian Attorney General Nelly Calderon believes there is evidence to prove that former Peruvian President Alberto Fujimori looted large sums of aid money during his tough 10-year rule.

In an interview on Friday, Calderon told Reuters a $150,000 check deposited in Fujimori's bank account in 1996 is central to trying him on corruption charges.

Fujimori, who quit in 2000 and fled to Japan, denies wrongdoing and says he is a victim of political persecution.

Investigators say Fujimori diverted donations by two Japanese aid agencies to his bank account in an affiliate of the Bank of Tokyo in Peru, Norbank.

"It seems we've found the river that leads to the sea of the Japan-Peru aid donations," Calderon said. "But we still don't know how much Fujimori received between the key period of 1994-1998," she added.

Calderon said the check shows that Fujimori's brother-in-law, then the ambassador to Japan, set up a bank account in Lima to receive the aid money via the Peruvian embassy in Tokyo, but then diverted the funds to Fujimori.

Peru has already sent a request to Japan to extradite Fujimori on murder charges.

The murder charges against Fujimori, who holds both Peruvian and Japanese citizenship, stem from the 1991 massacre of 15 suspected leftist guerrillas allegedly at the hands of a military death squad.

In 1992, nine students and a professor at the La Cantuta University were killed, allegedly by the same group. Prosecutors claim Fujimori authorized the murders.