The leader of Thailand's coup says investigators have not yet found enough evidence to charge deposed Prime Minister Thaksin Shinawatra with corruption.

General Sondhi Boonyaratglin says it will be difficult to implicate Mr. Thaksin. He says the corruption probe is a long, difficult process that might not yield anything.

Sondhi made the statements in an interview with reporters from the Nation Multimedia Group Tuesday.

Sondhi had earlier justified the September coup against Mr. Thaksin by saying he and other military leaders wanted to unify the divided country and hold the Thai prime minister accountable for alleged graft and abuse of power.

Sondhi said if Mr. Thaksin tried to return to Thailand, his plane would not be allowed to land.

The former prime minister has been living in London.

Some information for this report was provided by AP, AFP and Reuters