CHULA VISTA (CNS) - Chula Vista police tried Monday to determine what caused a 46-year-old woman to be pinned underneath a vehicle.

The woman suffered major injuries in the incident, which occurred in the 1300 block of Montera Street about 8 p.m. Sunday, according to Chula Vista police.

Emergency personnel freed the woman and performed cardiopulmonary resuscitation before taking her to Scripps Mercy Hospital, police said. Her condition early Monday was not immediately reported.