LIBERTY COUNTY, Texas (KTRK) -- Two young siblings were killed in a camper fire in Liberty County early Tuesday morning despite firefighters crawling inside the burning structure in an attempt to save them.

The children's grandfather identified the victims as a 3-year-old boy and his 2-year-old sister.

The fire broke out on a heavily wooded property along County Road 3819, not far from Highway 59 near Cleveland.