Bob Joseph/WNBF News

Investigators working to determine the cause of a devastating fire in downtown Binghamton are awaiting results of tests from a New York State police crime lab.

City fire marshal Daniel Eggleston says the probe into the April 30 fire at the Ellis Brothers furniture store on Water Street is progressing.

Eggleston says samples from the fire scene were taken to the state police lab in Port Crane.

It frequently takes weeks before lab results become available. Eggleston says investigators don't know when they'll receive the findings.

Eggleston says surveillance video recordings from the area of the fire have been reviewed. He says those images show no signs of any suspicious activity before the blaze was reported.

Eggleston says there's no sign that anyone entered the building prior to the fire.

Although the brick shell of the building still appears strong, Eggleston says "there's a lot of damage" inside.

No determination has been made as to whether any part of the structure can be salvaged or whether the entire building will be demolished.