Heather Locklear was arrested in Santa Barbara on suspicion of DUI Saturday night, according to the California Highway Patrol. Police say it was not alcohol, but rather drugs that impaired Locklear’s driving. Locklear has been released from jail after posting bail.

In June Locklear entered an Arizona facility for treatment of anxiety and depression. It seems very likely she will claim she had a reaction to her prescription drugs that impaired her driving ability.

Locklear’s ex husband, Richie Sambora, was also arrested in March for a similar charge, where he pleaded no contest.

Heather Locklear checked herself into a psychological treatment facility in Arizona. Locklear’s rep tells PEOPLE:

"Heather has been dealing with anxiety and depression. She requested an in-depth evaluation of her medication and entered into a medical facility for proper diagnosis and treatment."

Heather’s doctor called 911 back in March, saying concerned that she was suicidal.

Looks like the doc had good reason to be concerned.

Richie Sambora’s 10-year-old daughter Ava was in the car at the time of his DUI arrest Tuesday night. Laguna Beach Sgt. Jason Kravetz said:

"There were three females in the car, two of them were juveniles."

Kravetz says the results of Sambora’s blood tests will be revealed in about a week. Sambora will appear in court May 7.

Sambora could be criminally charged with child endangerment, which would directly affect his child visitation. No wonder his ex wife Heather Locklear told her psychiatrist she wanted to kill herself. Police sources say, after Sambora was busted, the cops called Heather Locklear, Ava’s mom. Heather then authorized the adult woman in the car to drive her daughter home.

Heather Locklear was visited by Ventura County Fire Department and two paramedics at her Thousand Oaks home last night, after someone called 911 claiming Heather was suicidal. When paramedics arrived they discovered there was "no problem," and left about ten minutes later. The person who made the call was not at Heather’s home, and may have made the call from somewhere else.

Heather’s rep issued the following statement:

"I spoke with Heather and she is fine. She never requested medical assistance and did not place a 911 call. Nor did anyone from her house call 911 or place a call requesting medical assistance."

Police have gathered at the donut shop to come up with a plan to catch the prank caller.

Heath Ledger dressed as The Joker on the cover of Empire Magazine’s January 2008 issue. Heath is The Joker in The Dark Knight which is set to be released in July 2008. There were more villains than just The Joker, so why bring him back so soon?