Authorities looking for missing family in border video - San Diego, California Talk Radio Station - 760 KFMB AM - 760kfmb

SAN DIEGO, Calif. (CBS 8) - Detectives are hoping national exposure will help locate a missing Fallbrook family.  A new flyer is being circulated and investigators are reviewing surveillance video to see if the family may have crossed the Mexico border.

With no leads in the mysterious disappearance of the McStay family, the National Center for Missing and Exploited Children is circulating a new flyer nationwide.

Summer and Joseph McStay and their two children -- 4-year-old Gianni and 3-year-old Joey -- have been missing for almost three weeks.

The family dogs were left at home unattended, perishable food was left out in the kitchen, and there was no sign of a struggle in the family's Fallbook home, investigators said.

"It is baffling and a real mystery to us," said San Diego Sheriff's Lieutenant Dennis Brugos.  "I personally have been in law enforcement for 30 years.  I haven't seen anything like this."

The new National Center flyer reveals for the first time that Summer McStay sometimes uses a fake birth date of January 1, 1978.  She was actually born in 1966 according to State records with a birth name of Virginia Lisa Aranda.  She also uses several other names, including Summer Martelli and Lisa Aranda-Martelli, public records show.

The family's white, Isuzu Trooper was found abandoned February 8 in San Ysidro and routinely towed at 10 p.m.

"Right now, we're still reviewing surveillance tapes at the International Border with Mexico," Lt. Brugos told News 8.

Whoever drove the Isuzu to the border likely took the last freeway exit right before the border crossing; then a right on Camino de la Plaza; and another right just one block away into the parking lot of the San Ysidro Village shopping mall.

The truck was found in a high foot-traffic area.  It seems unlikely the family would have been removed by force from their vehicle in a crowded parking lot.  Mall security says all vehicles found abandoned in the mall are towed every night at 10 p.m.

Surveillance cameras in the area may not be much help.

One rooftop camera inside the mall covers the entrance to the parking lot, but not the area where the Isuzu was abandoned.  Another camera across the street aims back toward the mall parking lot but it's unclear whether either camera has usable footage.

"It's hard to tell how productive they might be.  The quality that I've seen in the past (with other cameras) hasn't been that good," Brugos said.

At the pedestrian border crossing just two blocks away there are even more cameras, and hundreds of hours of footage that officers and volunteers with the National Center for Missing and Exploited Children will continue reviewing in the coming days.

Meanwhile, detectives continue to take a close look at all business associates of Joseph McStay.  Still, they have no suspects and officers are urging anybody with information to call the San Diego Sheriff's Department.