A man on probation for drunken driving was arrested by Petaluma police Tuesday evening after he managing to disable the device designed to prevent his car from starting if he'd been drinking.

Petaluma resident Ross Bracken, 49, was pulled over on Petaluma Boulevard North around 5 p.m. after a caller reported seeing his white BMW hit a tree and drive off.

Officers determined that Bracken was under the influence of alcohol despite a court-ordered ignition interlock device in his car, according to Petaluma police. The device is similar to a breathalyzer and won't allow a vehicle to start if it detects alcohol.

The device had been disabled, allowing Bracken to start and operate the car even though his blood alcohol content was .36 percent as measured by a later test, more than four times the legal limit, police said.

He was arrested on suspicion of felony DUI with priors, disabling the ignition interlock device, and violation of probation. He was booked into the Sonoma County Jail on $30,000 bail and his vehicle impounded for 30 days.