NY- Investigators are having a hard time getting to possible evidence on computers seized from the home of Yoko Ono’s allegedly blackmailing chauffeur because the machines are clogged with porn, new court papers charge.

Koral “Koko” Karsan’s computer – on which authorities say he wrote a two-page letter demanding $2 million from Ono – is full of smutty images with titles like “sexyteens” and “schoolgirls,” according to filings in Manhattan Supreme Court.

“The people have to date found multiple drafts of the December 2006 extortion letter mixed amongst thousands of downloads of graphic pornography,” wrote Assistant District Attorney Anne Schwartz in a letter to Judge Brenda Soloff.

Schwartz said it will take weeks for officials to work through the porn because they must painstakingly analyze everything on the hard drives.

She was responding to a request from Karsan’s lawyer asking for his client’s immediate release on bail. Karsan, 50, was denied bail on Tuesday.

The Amityville man allegedly threatened to reveal Ono’s private pictures and correspondence if she didn’t pay $2 million. When she refused, he allegedly threatened to kill Ono and her son, Sean Lennon.

He has pleaded not guilty to four counts of attempted grand larceny.