There was a loud explosion in Greenfield on Thursday.
One man was arrested for allegedly tossing an incendiary device out the window into a backyard at an apartment on Union Street.
This happened at around 3 p.m.
Authorities said the explosion was caused by a small propane tank used for camping.
No injuries were reported.
We are expecting more details when the suspect is arraigned on charges in court.
(Photo Credit: John Baibak, WHYN News)