Investigators with the state fire marshal's office continue to look for clues to determine the cause of a Saturday fire at the Delaware Hotel." The cause of the fire remains undetermined," said city spokesman Lee Yoakum. Investigators are focusing on the bar and reception area of the hotel at 351 S. Sandusky St., Delaware.

Investigators with the state fire marshal's office continue to look for clues to determine the cause of a Saturday fire at the Delaware Hotel.

"The cause of the fire remains undetermined," said city spokesman Lee Yoakum. Investigators are focusing on the bar and reception area of the hotel at 351 S. Sandusky St., Delaware.

On Monday, work crews began securing the structure, placing plywood over windows and doors. Because of substantial damage and internal structure collapse in the single-story bar and restaurant area, it could take investigators several days to complete their examination, Yoakum said.

No one was injured in the blaze.

Utilities at the hotel had been turned off weeks before the fire, Yoakum said.

Delaware police chief Russell Martin said Monday there had been "no real problems" at the hotel with break-ins since it closed last year.

A damage estimate was not immediately available, Yoakum said. "However, investigators say that more than half of the hotel sustained significant or extensive damage."

In June, the city, in partnership with Delaware County, applied to the Neighborhood Stabilization Program to use a federal allocation to purchase and demolish the hotel, then make the property available for residential development. Final approval from the state, which is overseeing the program, is expected this week, at which time the city would undertake an environmental study of the hotel property before entering into any sales agreement, he said.

"We continue to move forward and it remains the intention of the city and county to use federal funds to purchase the property, tear it down and make the site developable for housing of some kind," city manager Tom Homan said.

Fire crews arrived at 12:17 p.m. Saturday after receiving reports of heavy black smoke coming from the structure's west side. The fire was contained by 4 p.m.

Arriving at the scene were 12 engines, six ladder trucks and two paramedic units. Mutual aid was provided by Berlin Township, BST&G, Concord Township, Delaware County EMS, Elm Valley, Jerome Township, Liberty Township, Marysville, Orange Township, Porter-Kingston, Scioto Township, Tri-Township and the city of Worthington.

Investigators are seeking information from anyone who may know something about the fire. Anyone who saw something unusual at, or around, the hotel near the time of the fire should call the Delaware Fire Department at 730-203-1300, the Delaware Police Department at 740-203-1122 or the state fire marshal at 1-800-589-2728.