This week, we got the tragic news that Justin Townes Earle, the Nashville-born singer-songwriter and son of the legendary Steve Earle, had died at 38. At the time, no cause of death was revealed, but Nashville police now say that it was a “probable drug overdose.”

WKRN reports that police initially responded to a welfare check on Sunday after a friend of Earle’s called to notify them that no one had seem him since Thursday. Officers forced their way into the apartment and found him dead.

A spokesperson for the department says that there were no signs of a struggle or foul play. While there is no official cause of death yet as the autopsy is still pending, preliminary investigation indicates that Earle’s death was a “probable drug overdose.”

Earle was open about his struggles with drug use and addiction throughout his life. He began using hard drugs at 14 and had survived five heroin overdoses by the time he was 21. In recent years, following multiple stints in rehab, he had gotten sober.