The CID has found a foreign made pistol and several bullets in the car of former Governor Azath Sally, said Police Media Spokesman DIG Ajith Rohana.
Azad Sally was arrested by the CID yesterday and the firearms and ammunition were found in his car, police said.
Sally is under investigation over a statement he made on the country's law during a recent press conference.
Rohana said the former Governor had been arrested on the instructions of the Attorney General as he had committed an offense under the Prevention of Terrorism Act, 1978, the Ceylon Penal Code and the ICCPR Act No. 56 of 2007.