One of the injured is a Cheswold volunteer firefighter.

Investigators with the Delaware State Fire Marshal’s Office are probing an early morning house fire that sent three people, including a volunteer firefighter, to the hospital.

Chief Deputy State Fire Marshal Scott Bullock said the blaze was discovered at 12:48 a.m. Wednesday, Sept. 5 at 2000 block of Kenton Road, just west of the Dover city limits.

The Cheswold volunteer fire company responded to the call and arrived with heavy fire involving the structure, and immediately requested help from neighboring fire companies.

The fire was placed under control at 1:33 a.m., Bullock said.

Two of the home’s occupants were taken to Bayhealth Hospital Kent Campus suffering from smoke inhalation and cuts, but a 14-year-old later was transferred to the Crozer-Chester Medical Center, Upland, Pa. That individual is listed in critical but stable condition.

The other, 42-year-old victim, remains at Bayhealth and is in stable condition, Bullock said.

A Leipsic firefighter was taken to Bayhealth suffering from minor burns to the hands and face. That individual since has been released from the hospital, Bullock said.

Deputy fire marshals are investigating the cause of the fire.

Bullock said the home was not equipped with working smoke detectors, and the delayed detection of the fire contributed to the injuries sustained by the occupants.

The Red Cross of Delmarva is assisting the home’s occupants.

Damages are estimated at $50,000.

Agencies that responded to the scene included the Cheswold Fire Company, Dover Fire Department, Leipsic Fire Company, Hartly Fire Company, Camden-Wyoming Fire Department, Kent County EMS, Dover Police Department, and Delaware State Police.