Mark Roger Shearer, 53, was last seen on September 28, 2016, near North 23rd Avenue and West Union Hills Drive in Phoenix. Concern grew when he was not heard from and a friend who checked his home found signs that something was wrong but no sign of him. His sister and a friend reported him missing on October 1, 2016.

Investigators found his 2009 Harley-Davidson abandoned a few miles from his home near 21st Avenue and West Larkspur with the keys in the ignition. At the house groceries were left on the counter, his cat had not been fed, the home was in disarray and the trunk of his car was open. Family members say evidence of drug use and a circle of friends unknown to them were discovered, and a long-time friend said Shearer had been worried about a misplaced envelope containing $10,000.

The disappearance is being treated as suspicious and remains unsolved. Does anyone who knew Mark or saw him in late September 2016 have information that could help investigators?