Tampa, FL. Season 4 American Idol finalist, Jessica Sierra, was arrested today and charged with assault and drug possession. The 21 year old idol was found to have cocaine on her person after allegedly hitting a man on the head with a heavy glass. Sierra was released after paying a $11,500 dollar bail. The victim suffered a cut over his eye but so far no other information has been released about the incident. Sierra is to face arraignment on Monday.

See pictures of Sierra with the troops in Iraq last year: