WFAA out of Dallas is reporting prominent attorney Brian Loncar died from the effects of cocaine use.

According to WFAA reports, the Dallas County medical examiner concluded Loncar’s cause of death was “the toxic effect of cocaine.” Secondary causes included abnormally high blood pressure and heart disease.

The report also indicated Loncar’s manner of death was accidental, according to the medical examiner as reported by WFAA.

Loncar, 56, was found dead in a car in Dallas on Dec. 4. It was first reported that Loncar died of a heart attack.