WALTHAM, MA — Police have released video of a suspect in last year's 10-alarm Cooper Street fire, and they are offering $100,000 for information leading to his arrest and conviction. You can view the video, spliced together from several clips, here .

Five buildings in an apartment complex project that was nearing completion were wiped out following the 10-alarm blaze that began early one Sunday morning in July 2017.



Firefighters battle a 10-alarm blaze in Waltham. Photo courtesy of Newton FD

Officials said after the fire was ruled arson that two rewards would be offered - one sponsored by the Property and Casualty Insurance Companies of Massachusetts for $5,000 and another of up to $100,000 dollars by the construction company for help leading to the arrest - and conviction - of those responsible for setting the fire.

