DARIEN — Police arrested a 24-year-old New York man suspected of robbing two Chase Bank branches in Darien, as well as additional banks throughout Connecticut and Rhode Island.

Alpha U. Jalloh, of New England Thoroughway in the Bronx, was taken into custody by Darien Police Aug. 14, extradited from New York City on charges of second-degree robbery, second-degree larceny and third-degree burglary with the inference of a firearm. The charges are related to the June 12 robbery of a Chase Bank in Darien.

Jalloh is still under investigation for a second Chase robbery from July.

On June 12, the Chase Bank on the Post Road in Darien was robbed by a man who passed a note indicating he had a weapon. On July 11, the Chase Bank on Noroton Avenue was also robbed in a similar manner.

Based on this and surveillance images of the suspect, police believed the same suspect was responsible for both robberies, as well as similar incidents in Waterbury, Westport and Pawtucket, R.I. Darien police investigated with those agencies, as well as the FBI office in New Haven.

After being taken into custody by Darien police and charged for the Aug. 14 incident, Jalloh was given a court-set bond of $200,000, which he was unable to make. He was brought to state Superior Court in Stamford Aug. 15.

Police are still investigating the July 11 robbery and said they will not release further information at this time.

EKayata@hearstmediact.com; @erin_kayata