It contained a dozen or so of what we called “M-80s.” Someone heard from someone’s friend’s cousin that each was about a “quarter-stick of dynamite.” ...

Instead, it was a quarter stick of dynamite, which is actually an M-1000 firework. "They brought them upstairs," Bridgeport Fire Chief Richard Thode said. "There were two.

A man accused of planting the equivalent of a quarter stick of dynamite in a bathroom at the Hall of Justice was arrested, and police say he is a suspect in a similar incident in the same building ...

It's unclear who threw the quarter-stick into the hall. Police are still conducting interviews. No one was injured in the explosion, Spilker said, but the incident caused at least $600 in damage.