Actress Amanda Bynes, already facing charges for allegedly hitting a police car while driving drunk, may be in trouble again, accused of striking another vehicle in the San Fernando Valley, police said Friday.

The LAPD's Valley Traffic Division has completed its investigation into the Aug. 4 incident on Ventura Boulevard, in which a motorist claims a vehicle driven by Bynes rear-ended and damaged her Toyota. The driver said Bynes stopped only briefly, declared there was no damage and drove off.

The woman told investigators her car was damaged and that Bynes, 26, failed to provide insurance information or allow police to be called before she left, said Lt. Andrew Neiman of the Los Angeles Police Department.

Bynes told investigators she and the woman mutually agreed there was no significant damage after the low-speed collision, police said.

Neiman said investigators determined that the Toyota had about $800 in damage, and that the actress did not notify police or exchange insurance information as required by law. He said detectives will forward those findings to the L.A. County district attorney's office to decide whether to prosecute the matter, possibly as a hit-and-run case.

The collision case is the third incident involving Bynes this year. She was charged with driving under the influence following an April arrest, after she allegedly struck an L.A. County sheriff's cruiser..