A man found dead in a Gwinnett County office park died from using cocaine, the county’s medical examiner’s office said Monday.

Ronald Corona Jr., 39, was found around 2:30 a.m. Aug. 13 on Technology Parkway South in Peachtree Corners. Gwinnett officer were dispatched to the area following a report of a suspicious person “sleeping or possibly dead” behind a business.

Officers located Corona’s body, but could not immediately identify him. Investigators released pictures of Corona’s tattoos in order to learn his name.

Originally from Pennsylvania, Corona had been living in the Gwinnett area since November, police said.