Lindsay Lohan could face jail as her alcohol ankle-monitor alarm went off after the MTV Movie Awards in L.A.
Lohan denies she has done anything wrong tweeting: "My SCRAM was not set off, it is physically impossible considering I have done nothing for it to go off. All of these false reports are wrong".
After missing her drink driving probation hearing last month, the Mean Girls star was ordered to wear the bracelet.
The 23-year-old sited her reason for missing the hearing as being trapped in France.
The star, who was at The Cannes Film Festival at the time, said that her passport had been stolen.
There will be hearing on July 6 for a judge to decide if there has been a parole violation and if so whether the star will go to prison.