New information to be released on California family whose bodies were found in shallow graves

Authorities say they will release new information Friday in the murder investigation of a family of four whose bodies were found in shallow graves late last year.

San Bernardino County Sheriff John McMahon and District Attorney Mike Ramos will hold a news conference at 9 a.m. to discuss the case of Joseph and Summer McStay and their two young sons.

The couple and their boys, ages 3 and 4, vanished in February 2010 from their Fallbrook home in San Diego County.

A year ago, their skeletons were found in the desert outside Victorville. The site was not far off heavily traveled Interstate 15, which connects San Diego and Las Vegas.

No cause of death was released.

Investigators said there were no signs of forced entry at the family's home or in their SUV, which was found parked near the U.S.-Mexico border.

Neither Joseph nor Summer had told family or friends they were leaving. When they were reported missing, authorities went to the house and found eggs that had rotted on the kitchen counter and two pet dogs in the backyard, indicating the family hadn't prepared for an extended leave.

Nothing was missing from the home, and the couple's credit cards and tens of thousands of dollars in bank accounts never were touched.