Police arrested a man Wednesday whose picture was taken on a cell phone by a woman he allegedly abused on a W subway train in Queens.

Authorities say Kevin Johnson, 30, was arrested after a woman at the Bay Parkway subway stop recognized his picture and called police.

Investigators say the woman noticed him harassing another woman at the subway station.

Police say Johnson got on the W train at the Broadway station Monday morning and fondled a 33-year-old woman sitting next to him.

The victim was able to take a cell phone picture of her attacker, seen above, as she got off at Queensboro Plaza.

He faces charges of sexual abuse, harassment, disorderly conduct and marijuana possession.

Police are also searching for a man who they say robbed two people at gunpoint in the subway system.

Investigators say the man, seen in the surveillance photo on the right, robbed a straphanger on the platform of the southbound Number 4 train at the Burnside Avenue station on March 24.

The second robbery happened two days later on the northbound A train at Dyckman Street.

The suspect is approximately 30 years old, 6-feet-tall, weighing 220 pounds. He was wearing a blue jacket and black do-rag.

Anyone with information is asked to contact Crime Stoppers by calling 1-800-577-TIPS, by texting TIP577 to CRIMES, or by going to NYPDCrimeStoppers.com.