Indonesia, the largest Muslim country, condemned on Friday the desecration of the Koran by the US interrogators at Guantanamo Bay, Cuba, an Indonesian Foreign Ministry spokesman said.

"If it is true, the act is immoral and a humiliation, because the holy bibles such as the Koran, the bible, and others must be respected, and the perpetrators must deserve punishment " Marty Natalegawa, the spokesman said.

Scores of Islamic organizations here in a joint statement expressed their protest over the abuse of the Muslim people.

The spokesman said that currently the US side was conducting investigation on the case.

The Newsweek magazine recently reported that investigators probing abuses at the US military prison in Guantanamo Bay, Cuba, found interrogators "had placed Korans in toilets, and in at least one case flushed a holy book down the toilet."