New Delhi, Sept. 20 -- A Chadian opposition leader on Friday accused his country's government of targeting opposition figures in a crackdown, and alleged that he was mistreated during eight months he was in custody in Chad.

Robert Gam, who heads Chad's Socialist Party Without Borders, was released from custody in June. He told reporters in Paris, where he is now receiving medical care, that Chadian authorities never told him why he was arrested.

Gam's arrest followed a security raid on the PSF party headquarters in February last year. The party said Yaya Dillo, its leader, was killed during the raid. However, authorities said Dillo was among several people who were killed when they attacked Chad's national security agency.

The Associat...