KALAMAZOO (WKZO) -- Kalamazoo Public Safety responded to a call about a fire in a vacant home in the Edison Neighborhood at March and Washington around 6:30 a.m. Tuesday.  It took crews about an hour and a half to put out the fire.  There was no one in the house and no one was injured.  The fire marshal is looking for the cause, which for the moment is considered suspicious.