Just before 9:00 a.m. Monday, an employee of the Horizon House reported 64-year-old Irvin Groce missing.
Groce was last seen at his residence in the 300 Block of Wharton Street at 7:20 a.m.
Officials say Groce is mentally disabled.
He is described as 6'2, 180 pounds, with brown eyes, and grey hair.
He was last seen wearing a red Phillies t-shirt, blue jeans, and black sneakers.
Anyone with information on the whereabouts of Groce should contact South Detectives at 215-686-3013 or dial 911.