Blohan’s off her rocker. Disturbing flicks have surfaced showcasing a visibly plastered Lindsay Lohan (What else is new?) holding a KNIFE to a friend’s throat during a wild party.

“These photos are very worrying. Lindsay is so out of control. She should not be left within a million miles of a knife. The states Lindsay gets herself into she is lucky to be alive,” a snitch tells the British tabs.

The photos were taken four months ago at a house party where Lindsay was publicly claiming she was reformed and sober following her first tenure in rehab.

Lindsay’s family have paid for three guards to be with her in the clinic to make sure she does not escape.

More on Lindsay Lohan’s crazy year