A serial bank robbery suspect in Connecticut and New Jersey struck again in Danbury, police say.

The most recent incident happened Monday at the Stop & Shop on 44 Lake Ave Extension in Danbury before 11 a.m.

They say he took off with an undisclosed amount of cash in a bright blue-colored Hyundai.

The suspect is first believed to have robbed a People's United Bank inside the Stop & Shop on Main Avenue in Norwalk on Sept. 28.

Police say he robbed the People's United Bank inside a Stop & Shop on Kings Highway Cutoff in Fairfield two days later.

He's believed to have moved on to Westport and Shelton.

Police say he even committed two robberies in Morris County, New Jersey.

Police say the suspect usually slips the teller a note and gets away with cash.

However, in the most recent robbery in Danbury, one of the tellers told police the suspect may have been armed, but didn't show a weapon or threaten anyone with one. 

The suspect has been seen taking off in the same blue-colored Hyundai Elantra.

The reward for information leading to the suspect's arrest is now up to $3,500.

Anyone with information is asked to contact Danbury Police Detective Tom Collins at 203-797-4667 or the anonymous TIPS Line 203-790-8477.

Police say it is also OK for the public to call department's in towns where the suspect struck.