Police have released pictures of three men wanted in an armed robbery onboard a Long Island Rail Road train.

According to police, one person displayed a gun and robbed a man on a train approaching the Wyandanch station on Jan. 29 at 4:05 a.m.

Two other suspects assisted and acted as a lookout, police say.

The three then exited the train at the Wyandanch station and were last seen at the intersection of Straight Path and Jamaica Avenue, which is about a mile and a half from the station.

Commuters at the LIRR stop in Wyandanch Monday say they want more police officers on trains, platforms and around the stations.

"At all local railroads, we need more of a police presence walking around," said Ellisha Haynes-Cundari, of Wyandanch. "And not just because something happened recently, because we live in a community together, we are a village and we deserve to feel safe."

This is the second violent incident that happened on an LIRR train in just a matter of days. On Wednesday, authorities say a teenager assaulted two LIRR conductors with a ticket-issuing machine when they asked him to pay a fare.

Suffolk County Crime Stoppers are offering a cash reward for information that leads to an arrest.

News 12 asked the MTA why the information was released now when the incident happened in January.

In a statement, the MTA, said, “MTA Police detectives make determinations on when to use specific investigative tools based on the facts of each case, and appreciate the public’s assistance when requested.”

Anyone with information is asked to call 1-800-220-TIPS.