Former "American Idol" finalist Jessica Sierra was jailed early Saturday after a drunken confrontation with police and onlookers, authorities said.

The arrest comes less than two weeks after she pleaded no contest to charges of battery and possession of cocaine.

Sierra, 22, was charged Saturday with disorderly intoxication, resisting arrest, felony battery and possession of cocaine, according to the police report. No bond was immediately posted.

Sierra, who was supposed to be completing a drug-rehabilitation program to be televised nationally, was arrested at a bar in Ybor City at 2:10 a.m. Saturday.

"As the defendant was taken into custody, she attempted to push away and flee the scene," the arresting officers wrote.

A message left Saturday for Sierra's attorney John Fitzgibbons was not immediately returned.

On Nov. 19, Circuit Judge Gregory Holder sentenced Sierra to 12 months probation and random drug screening. She was accused of hitting a man on the head with a glass at a Tampa nightspot in April. Officers then found a small amount of cocaine while searching her afterward at the county jail.

A top-10 contestant on the show in 2005, Sierra entered a California rehab facility in July that was to be documented on VH1's reality show "Celebrity Rehab with Dr. Drew," sometime early next year.