First lady Maria Shriver appears to need a refresher on California traffic laws.

Two weeks ago, she apologized after the Web site TMZ.com posted photographs and a video of her violating the state's handsfree cell phone law.

On Monday, the Web site posted a video showing her approaching her Cadillac Escalade, which is clearly parked in a red zone. The site says Shriver parked there nearly an hour while visiting a doctor's office in Santa Monica.

Shriver issued a statement through her office saying she regrets the mistake.

Santa Monica Police Lt. P.J. Guido says the department will investigate, although he says it's not immediately clear from the video when and where the violation occurred.