Authorities have canceled an endangered missing adult alert issued on Wednesday evening for an elderly Youngstown. 

The incident took place on South Avenue. 

Officials said 72-year-old Thomas Knisley left his South Avene residence around 7:30 a.m. Wednesday and failed to return.

Authorities were concerned because Knisley left home without his oxygen tank.

Police say the alert was canceled Thursday morning after Knisely returned home safely.