An Oklahoma woman is accused of killing her roommate after she found text messages with her ex-fiancé, according to officials.

Kristen Elizabeth Jones, 21, allegedly shot her 23-year-old roommate, Miranda Pederson, in the head then covered up the murder by setting their house in Luther on fire, The Oklahoman reported.

Jones’ ex-fiancé, Bryson Harrington, lived at the house with both women, according to the newspaper.

The alleged shooting occurred when Jones discovered Pederson had been exchanging texts with Harrington.

In a phone call monitored by authorities, Jones told Harrington that Pederson first stabbed her in the hand.

Jones then allegedly grabbed a gun and shot Pederson in the back of the head, according to police. She also reportedly admitted to burning down the home to “cover it up because she got scared.”

Hickory Hills Fire Protection District responded to the home around 9:45 a.m. Monday after the fire chief spotted smoke, news station KFOR reported.

“While at the scene, putting out the fire, they discovered a body inside the home,” Oklahoma County Sheriff spokesman Mark Opgrande told KFOR. “They immediately called the sheriff’s office, and we called our homicide investigators to the scene.”

Authorities said they learned Jones fled the state and pulled her over Monday afternoon at a traffic stop in Gainesville, Texas.

She was booked Tuesday into the Oklahoma County jail on suspicion of murder, arson and desecration of a human corpse.