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.

This one has authorities scratching their heads. A man who was reported missing was eventually found three days later, deceased inside a Planet Fitness tanning bed. Here's what we know. The deceased man, 39-year-old Derek E. Sink, was last seen on Friday, Nov. 8, by family members and reported missing on Sunday, Nov. 10.