Two homes were heavily damaged Wednesday in the city of Dunkirk. Photo by Jimmy McCarthy

DUNKIRK — Two homes were destroyed in fires late Wednesday in the city of Dunkirk.

A fire was reported at 343 Deer St. shortly before 10 p.m. Upon arrival the two-story house was heavily involved, with fire spreading to 432 Deer St. Large diameter hose lines were deployed, and mutual aid was called from East Dunkirk and Fredonia for assistance.

The house at 434 Deer St. was an unoccupied vacant. One adult lived at 432 Deer St., but was not home at the time of the fire. Several other structures were threatened by the fire but firefighters managed to contain the fire. Both structures are a total loss.

A rehab tent was up for crews with water and ice. Two firefighters were treated at the scene for heat-related medical emergencies and were transported to Brooks Hospital.

During the fire there were six calls for emergency medical incidents in the city. The Dunkirk, Fredonia and Brocton fire departments handled these incidents.

Crews remained at the fire until 2:32 a.m.

Dunkirk Fire was assisted at the blaze by East Dunkirk Fire, Fredonia Fire, Sheridan Fire and Alstar E.M.S. The West Dunkirk and Brocton Fire departments stood by at fire headquarters.

The cause of the fire remains under investigation.