Late screen siren Marilyn Monroe was a suspected communist and tracked by the FBI.

Newly-released documents reveal Monroe was just a number of stars the Federal Bureau of Investigation kept files on - including John Lennon, Frank Sinatra, THE Beach Boys, Louis Armstrong, ALBERT EINSTEIN, Lucille Ball and Liberace.

The Some Like It Hot actress was targetted after she applied for visa to visit Russia. She was then tracked meeting a communist group during a holiday to Mexico organised by Sinatra.

Sinatra aroused suspicion because the FBI were tipped off he had attended sex parties with US President John F Kennedy.

Lennon was added to the list when agents deduced he planned to disrupt the Republican National Convention in 1973, but struck him off because his drug habits rendered him incapable of being a revolutionary.