Originally published May 1. Updated with victim’s identity, and current status of the investigation.

ANOKA, Minn. (WCCO) — The cause of death of an Andover man who died inside his Anoka County Jail cell last week is still unclear, according to the county sheriff’s office.

The victim, identified Wednesday by the Midwest Medical Examiner’s Office as 20-year-old Riley J. Domeier, was found unresponsive in his cell just after 1 a.m. last Thursday. Staff attempted lifesaving measures, but he was eventually declared dead at the scene.

“This is a tragic situation in which we anxiously await the results of the investigation and the report from the medical examiner,” Sheriff James Stuart said. “Our thoughts and prayers remain with the family during this difficult time.”

The medical examiner’s office “did not find any signs of trauma to Domeier,” and they’re awaiting the results of toxicology tests, which could take several weeks.