LOS ANGELES (CBSLA.com) —Authorities found suspected bank robbers on Friday with the help of a tracking device that was placed in their stolen loot.

Witnesses said three masked gunmen allegedly entered an Altura Credit Union branch at Day Street and Canyon Springs Parkway in Moreno Valley around 9:30 a.m.

The suspects took an unspecified amount of money, hopped into a car and headed to Los Angeles.

California Highway Patrol officers and sheriff’s deputies were able to follow the men using a hidden GPS device, according to Riverside County Sheriff’s Deputy Albert Martinez.

“There was a tracker with that money that was taken, and based on that, we did start tracking that, and it went all the way down to LA,” Martinez said.

A section of the northbound Harbor (110) Freeway, south of Florence, was shut down as authorities searched cars and questioned motorists.

All three suspects were found and taken into custody.

Police believe two other people may have been involved in the crime.