(CNN) -- Fire officials in northcentral Ohio were conducting interviews with witnesses and first responders early Friday to determine what caused a blaze that killed three children.
The fire broke out at a mobile home in Bucyrus late Thursday night, said Shane Cartmill with the state Fire Marshal's Office.
Officials did not release the ages of the children who died, nor did they have additional information about the condition of a fourth child who was injured in the blaze.
A fourth child was injured. Officials did not release their ages or identities.
Authorities could not immediately tell whether the home was equipped with fire alarms.