IMPD is investigating the death of a man who was found dead inside a Planet Fitness Monday on the southside of Indianapolis.

Karen Wetzel speaks with PEOPLE about her son Derek Sink's last moments before he was found dead in a Planet Fitness tanning bed in Indianapolis. He had been in the tanning bed for three days before he was discovered.

Days after Derek Sink’s body was discovered in a Planet Fitness tanning bed, his mom Karen Wetzel shared more about her son and what may have led up to the moments before his death.