The Drug Enforcement Administration is investigating the source of the drugs Los Angeles Angels pitcher Tyler Skaggs had in his system the night he died, according to an ESPN report.

Skaggs was found unresponsive in his hotel room in Southlake, Texas, on July 1, hours before the Angels were to begin a series against the Texas Rangers. An autopsy revealed the 27-year-old left-hander had fentanyl, oxycodone and ethanol in his system when he choked on his own vomit and died.

A senior DEA official told ESPN the agency frequently investigates cases involving fentanyl to track down the source of the drug.

Skaggs' family issued a statement after the autopsy was released August 30 that said an Angels employee might have been involved. However, no one connected with the team has been publicly linked to Skaggs' death or has been identified as a target in the investigation.