L.A. prosecutors charged actress Amanda Bynes on Wednesday in connection with two alleged hit-and-run car accidents.

The charges are related to crashes on April 10 and Aug 4. 2012, said city attorney's spokesman Frank Manteljan. Byrnes is scheduled to be arraigned Sept. 27 in Van Nuys. She faces a possible sentence of six months in jail for each count, if convicted. The file on the April incident was reopened after the August crash.

The LAPD's Valley Traffic Division investigated 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 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, 26, later told investigators that 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, which will decide whether to prosecute the matter, possibly as a hit-and-ru.