After taking an extended spring break, the so-called “Good Grammar Bandit” appears to have resumed his string of bank robberies in the north metro suburbs, the Federal Bureau of Investigation said Thursday.

The suspect, who was given his moniker for typed demand notes that feature impeccable spelling, grammar and punctuation, is believed to have hit four banks over a six-day stretch in early April.

Three more robberies in July — the most recent was on Tuesday in Thornton — also have been attributed to the man described as black, in his 30s, about 5-foot-7 to 5-foot-9 with a slender build.

The first rash of robberies took place in Northglenn, Westminster, Broomfield and Thornton. The most recent victims were in Westminster and Thornton.

In each case, he entered a bank, presented a well-written note, received money and took off on foot. His image has been captured on several surveillance photos.

Anyone with information on the suspect can call the FBI Rocky Mountain Safe Streets Task Force at 303-629-7171 or Crime Stoppers at 720-913-7867.