NEWARK -- Three suspects arrested after a smash-and-grab robbery at a Vacaville jewelry store Thursday may be the same robbers who held up a Newark mall shop in July, police said.

Just before 11 a.m., six suspects entered DeBartolo & Co. Fine Jewelers, in the 500 block of Main Street in Vacaville, armed with hammers and a handgun and used them to smash display cases to reach the loot, police said.

San Francisco residents Adrian Landers, 18, Derrick McCann, 18, and a 16-year-old boy were subsequently arrested after a pursuit near American Canyon Road on Interstate 80, according to Vacaville police.

On Friday, police were continuing a search for three other suspects, Vacaville city spokesman Mark Mazzaferro said.

Newark detectives were looking into whether the suspects were the same robbers who stormed Zena Jewelers International in a crowded shopping mall July 26, smashed display cases with a pistol, grabbed jewelry and fired shots in the shop. Four suspects were involved in that incident.

No one was injured in the 12:15 p.m. armed robbery at the NewPark Mall business, which left broken glass and shell casings littering the store's floor.

Both Landers and McCann were booked into Solano County Jail, where each was being held on $35,000 bond Friday morning, booking records show. The 16-year-old was taken to juvenile hall.

The suspects in the Newark heist -- four men each armed with a gun -- ran to at least two waiting getaway cars and were last seen heading onto northbound Interstate 880 in a white Mercedes E-class and a black Acura or Lexus, police said.

Police are asking anyone with information on either heist to contact Vacaville police at 707-449-5200 or Newark police at 510-578-4237.