Homicide detectives and the Allegheny County Fire Marshal’s Office are investigating the cause of a fire early this morning in Sewickley that left two children dead and their mother injured. The victims, 9-year-old Lyric and 6-year-old Wylde Linn were students in the Quaker Valley School District. Authorities say firefighters were able to pull the two little girls out of the home, but they were pronounced dead at the scene. Police say their mother jumped from the front porch roof to escape the burning home and she was taken to the hospital where she is recovering from second-degree burns and other injuries from the fall. In a letter to families, Quaker Valley School District Superintendent Tammy Andreyko said the district is working to assist staff “as they learn of and process this tragedy. While we do not have official details regarding this incident, we will address student questions should they arise.” Andreyko said the district will have counselors and psychologists to assist students and staff. (Photo: WPXI)