A house fire near Johnstown early this morning left a woman and her three children injured.Authorities have not identified the victims, but say they are a 25-year-old woman and her children ages 6 months, 18 months, and 2 years. They are being treated at Columbus hospitals for injuries sustained in the fire at a home in the 54-hundred block of Johnstown-Utica Road. The State Fire Marshal and Hartford Township firefighters are searching for the cause of the blaze.