SAN DIEGO (CNS) - A transformer caught fire at a San Diego Gas and Electric substation in Palm City Saturday, prompting the evacuation of several homes and businesses and closing streets in the area, officials said.

The blaze broke out about 8:10 a.m. at the substation near 1669 Palm Avenue, and fire crews had the blaze out about 9:50 a.m., according to a San Diego Fire-Rescue Department dispatch supervisor.

San Diego police evacuated the residences on Palm Avenue between 16th and 17th streets and in the 1700 block of Dahlia Avenue. A strip mall at 1559 Palm Avenue and a restaurant at 1669 Palm Avenue were also evacuated, police said.

Announcements were made to residents of the nearby Apache Trailer Lodge but it was unclear if they were asked to evacuate.

The on- and off-ramps to westbound Palm Avenue from Interstate 5 were shut down as crews battled the blaze and a hazardous materials team worked to contain a possible leak from the damaged transformer, according to SDFRD and the California Highway Patrol.

Palm Avenue between 16th Street and Thermal Avenue was also closed, and streets were blocked at northbound 16th Street and Donax Avenue, at westbound Palm Ave at Saturn Boulevard and at northbound Donax Avenue and Georgia Street.

Authorities expected to have the streets back open just after 11 a.m.