Just before 11pm Tuesday night firefighters were called to 1895 Reservoir Ave. for a fully involved structure fire. Firefighters found heavy fire on the Delta or right side of the building. The firefighters quickly learned from neighbors that the house was empty for a couple of months now but were uncertain if vagrants might have been inside. A primary and secondary search proved negative. Firefighters did encounter a partial floor collapse and they shifted to a more defensive attack of the fire. There were no injuries to any firefighters and the fire remains under investigation.