Police say they watched YouTube videos to help them figure out who caused a series of mailbox explosions in Fall River this week.
Police launched an investigation after getting complaints about homemade chemical bombs going off in mail boxes around the city.
Investigators says they arrested three city residents Tuesday after checking out videos online that showed the suspects putting explosives in mailboxes.
20-year-old Jordan Domonte; 22-year-old Matthew Camara; and 19-year-old Kyle Machado, are all scheduled to be arraigned Thursday on multiple counts of throwing or placing explosives and malicious destruction of property over $250.
Police say there were no injuries in any of the explosions.
This program aired on July 5, 2012. The audio for this program is not available.