By Marci Izard

GREENFIELD, Mass. (WGGB)--  Fire officials have not said whether the fire at 29 Chapman Street on Sunday morning was suspicious.  Chief Michael Winn says the investigation into the cause of the blaze that displaced 21 residents is still under investigation.

In the meantime, the fourth floor of the building has been deemed unstable.  Chief Winn says it will be removed within the next few days.  Until then, Chapman Street will remain closed to traffic.

The American Red Cross and Greenfield Moose Lodge are assisting those displaced.  To make a donation, call the Lodge at 413-773-9030 or the Red Cross at 413-774-4376.