Editor’s Note: This story has been updated.

EDINBURG, Texas (ValleyCentral) — A 52-year-old man has been charged with the murder of his girlfriend who was found dead in Edinburg on December 7.

Adan Roberto Ruiz is accused of beating 47-year-old Yvonne Salas to death at their residence in a mobile home park in the 1400 block of North Closner Boulevard on Tuesday.

On Tuesday at approximately 4:57 p.m., Edinburg PD responded to a call in reference to an unresponsive female who was assaulted, according to the affidavit.

Ruiz initially called 911 stating he arrived home and discovered his girlfriend unresponsive.

An officer discovered Salas dead in the home lying on her back facing up with her arms spread to her sides. Cold to touch, Salas was examined for responsiveness of pupils by EMT, however, none were observed.

Initial autopsy reports indicated that Salas’s cause of death was by blunt force trauma to the head and body, official documents say.

Authorities concluded Ruiz was the last person to have seen Salas alive in the morning, however was unable to provide any estimated times.

A family member spoke with investigators stating Ruiz had assaulted Salas before but she never reported the abuse.

Detectives learned Ruiz was the last person to see Salas and noted Ruiz cleaned himself up prior to the officer’s arrival, said the probable cause affidavit.

Ruiz has been charged with first-degree murder. His bond was set at $750,000.