Stoughton Police, working with the FBI Bank Robbery Task Force, foiled an alleged robbery at Webster Bank in Stoughton Friday morning, Stoughton Police Executive Officer Robert Devine said.

Lucas Gravina, 29, of Hull, entered the Webster Bank at 700 Washington St. (on the corner of Washington and Monk Streets) at 10:22 a.m. on Nov. 2 and robbed the bank of an undisclosed amount of money, Devine said.

Gravina, a suspect in a series of bank robberies in the local area, was being surveilled by Stoughton Police Detectives and the FBI Bank Robbery Task Force as he was heading into the bank, and when he walked out, Stoughton Police greeted him and placed Gravina under arrest in the bank parking lot, Devine said.

Gravina is charged with unarmed bank robbery while masked.

Easton Police said Gravina is a suspect in the Oct. 15 robbery at TD Bank at Roche Bros. Plaza in Easton on the Easton/Stoughton line.

Devine said Gravina is also a suspect in bank robberies in Canton, Dedham and Milton.

This is the second time Webster Bank in Stoughton has been robbed since June. In both cases the alleged bank robber was caught and arrested.