A 63-year-old man suffering from schizophrenia and dementia is missing. John Walsh went missing on Tuesday afternoon. He was last seen hitchhiking towards Windham after he left the Parkland Medical Center in Nashua. Mr. Walsh is 6-foot-tall, has gray hair, brown eyes and weighs 138 pounds. He was last seen wearing a brown leather jacket, gray T-Shirt, and blue jeans. If you see John or know his whereabouts call the Derry NH Police Department at 603-432-6111 and ask for the shift supervisor.