LOS ANGELES (CBSLA.com) — A team of robbers has hit nearly two dozen banks in the Los Angeles area since November, and police need help to catch them.

Alhambra police are working with the LAPD, Los Angeles County sheriff’s department and the FBI to capture a trio of bank robbers they have dubbed the “Cold Hands Bandits” for their habit of walking in with one hand in their pockets.

READ MORE: Pasadena Unified School District Parents Voice Concerns About Return To Classrooms, Vaccines, Testing

“In recent robberies, the suspects have become increasingly brazen and have jumped over the teller’s counter,” police said in a statement. “Law enforcement is greatly concerned that the level of aggression the suspects are displaying is increasing as the bank robberies continue.”

The trio has robbed 23 banks since November.

READ MORE: Five Arrested After Wild Pursuit Ends With Car Crashing Into Pole, Flipping Over

The robbers were all described as black men between 25 and 30 years old. Two of them are between 5-foot7 and 5-foot-9 and 170 to 190 pounds. The third suspect is between 5-foot-6 and 5-foot-7 and 140 to 160 pounds. They are all considered to be armed and dangerous.

Anyone with information can call the LAPD’s Robbery-Homicide Division at (213) 486-6890.

MORE NEWS: LA Community College District Board Mandates Vaccinations, Masks

(©2016 CBS Local Media, a division of CBS Radio Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. Wire services contributed to this report.)