Firefighters are monitoring the air in the area of a massive fire in Sudbury on Wednesday afternoon.

Sudbury fire Chief John Whalen said a shed fire was reported at about 2:40 p.m. on the property of Cavicchio Greenhouses at 110 Codjer Lane.

It was fortunate that it was not a windy day. However, residents were asked to keep their windows closed, and motorcyclists were warned not to come into the area, WBZ reported. 

The cause is under investigation.