Lindsay Lohan could find herself behind bars if reports that her alcohol-monitoring bracelet went off during a Hollywood party over the weekend are true.
According to a report in the New York Daily News, Lohan was at an after-party for the MTV Movie Awards Sunday night, when her ankle bracelet, called SCRAM, started blinking red.
According to an eyewitness, Lohan "was dancing and mingling with friends all night as the light kept flashing. Everyone was staring, but she didn't seem to notice."
However, Lohan went on Twitter Monday to explain what happened:
"Haha! Last night-My friend Johnny put a light up bracelet on my boots and someone asked me if my SCRAM was lighting up RED.... Well it was a light up bracelet from the bathroom."
And Kathleen Brown, a spokeswoman with Alcohol Monitoring Systems, told the News that the actress' SCRAM has "no alarm, no indication of any kind. There's no red light at all."
But another source tells the paper, "Our information is that it was not a mistake or malfunction."
The judge handling Lohan's case is expected to get a report Tuesday or Wednesday, and could hold an emergency hearing. If the judge decides Lohan was drinking, she could be sent to jail.
Lohan wore a long jumpsuit to the awards show in an effort to hide the bracelet.