US News

BOOZY O’BRIEN GOING ‘INSIDE’ A REHAB TANK

Pat O’Brien, the troubled co-host of “The Insider,” is back in rehab – and could lose his job this time.

“O’Brien and his doctors felt this is the best course for maintaining his sobriety,” said Lisa Summers Haas, a spokeswoman for “The Insider” and its sister show, “Entertainment Tonight.”

It was not clear late yesterday exactly when or where O’Brien had checked in to rehab. Haas would also not say when or if O’Brien was expected back to the nightly show.

An “Insider” staffer said that with his latest trip to rehab, O’Brien may have used up his “nine lives” with producers.

In 2006, the mustachioed broadcaster entered rehab the day before several voice mails – in which a man who sounded like him tried to coax a woman into a sex threesome – were posted on the Web.