The FBI is looking for a burglar they dubbed the "good grammar bandit" because of his perfectly written demand notes, FoxNews.com reported.

On Monday, investigators asked the public for help in finding a man they believe robbed four banks in the Denver area in less than a week this month. In each robbery, he handed over notes with perfect spelling and punctuation.

A spokesman for the FBI would not disclose how much money the man stole, Fox News said. After each robbery, the man flees on foot.

The good grammar bandit is described as a black male, standing around 6-feet tall with a slender build and in his 30s. In bank surveillance footage, he is seen wearing a hooded sweatshirt, a hat, and sunglasses.

Authorities believe he robbed the following banks: TCF Bank on April 2; Chase Bank on April 3; TCF Bank on April 6; and Chase Bank on April 7.

Following news of the FBI announcement, people of Twitter -- including reporters -- were quick to make jokes about the burglar's nickname.

"If I was a bank robber, I'd want this nickname," said John Schroyer, video editor at the Colorado Springs Gazette.

"The FBI in #Denver is chasing a bank robber they've dubbed the Good Grammar Bandit. As opposed to: "Give me all you're money," tweeted Jack Healy, Rocky Mountain correspondent for the New York Times.

Anyone with information on the burglaries is urged to contact FBI Rocky Mountain Safe Streets Task Force at (303) 629 - 7171. You can also remain anonymous and earn a reward of up to $2,000 by calling Crime Stoppers (720) 913 - STOP (7867).