Published: Sep 12, 2010 1:02 AM EDT
Updated: Sep 11, 2010 10:03 PM EDT

SAN BRUNO, Calif. (AP) - Authorities say search teams have found the remains of 2 more people who were killed in the suburban San Francisco blast that destroyed nearly 40 homes.

The discovery Saturday raises the death toll to six. San Bruno city spokesman Steve Firpo says the remains were found Saturday morning. He had no other details.

Earlier the San Mateo County Coroners office said 44-year-old Jacqueline Greig, her daughter 13-year-old Janessa, and 20-year-old Jessica Morales were killed in the fire. One other victim found earlier has yet to be identified.
      
The cause of the pipeline blast, which injured at least 50 people, some critically, is under investigation.