KNOXVILLE, Tenn. (WATE) — Two men are charged with first-degree murder in relation to a woman whose body was discovered by a jogger off of South Northshore Drive on July 30, according to court records.

On August 4, Tyrone Mack Jr. was arrested on charges of abuse of a corpse, tampering with evidence, and accessory after the fact in relation to the death of Alma Delia Matias, 24, of Knoxville. Court records obtained by WATE on August 9 show that Mack was also charged with first-degree murder.

Jason Lamont Young (Knox County Sheriff’s Office)

Jason Lamont Young, 23, had previously been charged with arson, theft of property, abuse of a corpse, and tampering with evidence in relation to the case. On Saturday, August 5, the Knox County Sheriff’s Office announced that Young had been charged with first-degree murder and that they were searching for him. Just after 4 p.m., KCSO released that Young turned himself in.

The investigation is open and ongoing, the sheriff’s office said.

According to a general sessions docket, Young and two other people, later identified as Mack and Jaquaysjha Ryans, were allegedly seen on security camera footage carrying “something very large” wrapped in a blanket to Matias’ vehicle from an apartment on Merchant’s Road that Matias was last seen going into. That blanket was presumed to be the same one found near Matias’ body, the docket says.

Another man, Rontrell Deshan Allen, was also charged with arson in the case.

EDITOR’S NOTE: This story has been updated.