TUCSON, Ariz. (KVOA) - New developments have emerged regarding the disappearance of 72-year-old Sitharamanjaneyulu Potiny. His son, 42-year-old Vamsi Potiny, has been arrested on charges of vulnerable adult abuse and endangerment.

According to an interim complaint, Vamsi Potiny admitted to detectives that he drove his father to an observation area near Ski Valley and left him with food, water, and a note that said something along the lines of "Help me," along with a phone number.

Sitharamanjaneyulu Potiny, who is diabetic and has memory issues, remains missing. He does not speak English, which adds to the concern for his safety.

Pima County Sheriff Chris Nanos said, "We all have our suspicions right. But I would tell you that today as I sit here we're still treating this as a missing pe

See Full Page