Pleasanton police, in conjunction with partnering agencies, have arrested two 17-year-old boys in two robbery cases at Stoneridge Shoppping Center over the weekend.
The suspects have been taken into custody by the Oakland Police Department, but because they are juveniles, identifying information about them will not be released.
"The investigation into these robberies is still very active," said Pleasanton police lieutenant Kurt Schlehuber.
One suspect, thought to be a juvenile, remains at-large, and police believe the trio are responsible for other crimes in the East Bay.
Last Sunday afternoon, a 63-year-old woman who was standing by her car at Stoneridge Shopping Center was kicked, threatened with a gun and robbed of her purse Sunday afternoon, according to Pleasanton police.
The woman was standing by her car when three teens came up to her. One grabbed her purse, and the woman pulled back on it as another teen pulled out a rifle or shotgun, according to police.
It marked the second purse-snatching reported at the mall in as many days last weekend.
On Saturday night, a 17-year-old girl from Danville was walking to her car in the mall parking lot when three men left a silver SUV and one grabbed her purse, according to police.
When she resisted, one teen allegedly punched her in the face and pushed her to the ground. The teen reportedly did not require medical attention.
The silver SUV was later reported in a car-jacking incident at the San Leandro BART station, where three African-American teens drove up in the vehicle and stole a cream-colored Mercedes, Schlehuber said.
The trip then took the Mercedes to Stoneridge Mall on Sunday and approached the 63-year-old woman. In that incident, the woman fell to the ground after struggling over the purse, and one of the men kicked her in the back before the trio ran away with her purse, according to police.
The woman reportedly sustained minor injuries but didn't need hospitalization.
The boys left the mall in the Mercedes SUV, which drove onto westbound Interstate 580, police said.
The culprits in that case were described as three black teenagers with medium build and wearing dark-colored hoodie sweatshirts.
Oakland police later found the described vehicle with two of the suspects inside, and they were arrested and interviewed.
Anyone with information about either robbery is asked to call the Pleasanton Police Department at 925-931-5100.