WARREN, Ohio (WKBN) – An autopsy has been scheduled for Friday morning for a teen who died in a fire Thursday morning in Warren.

Chassidy Broadstone, 16, was one of three sisters at home when the fire started at about 2 a.m. at the house on Nevada Avenue. The other two sisters made it out and were taken to different hospitals for treatment. Broadstone died in the fire.

“The fire was coming out of the roof of the house and out the windows,” said Terrence Jennings, who witnessed the fire.

Chief Ken Nussle said Broadstone’s body was found in a second-floor bathroom.

“I do know that the occupants were not able to escape out the first floor because the stairwell was totally incinerated, so they had no choice but to exit from a second-floor window,” he said.

One of the sisters pointed to a possible point of origin when talking with a 911 operator.

Caller: “Someone set it on fire from the garage.”

The fire has been ruled arson. Investigators with the Fire & Explosion Investigation Bureau are working in conjunction with Warren fire and police departments, ATF and the Trumbull County Medical Examiner’s Office in the ongoing investigation.

“That’s why we have the investigators sifting through all the rubble and talking with neighbors,” Nussle said.

A $5,000 reward has been offered for information leading to an arrest and conviction in the arson. Anyone with information is asked to call 800-598-2728.

Broadstone was a junior at Warren G. Harding High School. District officials issued statements Thursday about her tragic death.

“The Warren City School District community extends our sincere condolences to the family, friends and classmates of one of our students, Chassidy Broadstone, who lost her life early Thursday morning in a tragic and fatal house fire. It is a sad day for the entire WCS community,” said Superintendent Steve Chiaro.

“The Warren G. Harding family was saddened to learn about Chassidy’s tragic passing,” said Principal Sandra Williams.“Chassidy was an outgoing and well-spoken young woman. She was a loyal friend and was very protective of her peers and family. She had dreams of being a business owner. Chassidy spent time working with other students in her classes who struggled with their content, and she was especially strong in math. Many WGH staff members and students will deeply miss Chassidy’s smile, sense of humor, and presence.”

Grief counseling will be provided by the Warren City Schools and WGH Crisis Response Team for students and staff during the day on Friday, Jan. 20, and beyond, as needed.

Kyle Alexander contributed to this report.