Palestinian Authority President Mahmoud Abbas was a Soviet spy in Damascus in the 1980s, Israel’s Channel 1 television reported Wednesday, citing information it said was included in an archive smuggled out of the USSR.

According to Channel 1’s foreign news editor Oren Nahari, the famed Mitrokhin archive, kept by KGB defector Vasily Mitrokhin, revealed that Abbas was a Soviet mole in Damascus in 1983.