Calgary Police say the Amber Alert for missing five-year-old Nathan O’Brien and his grandparents Alvin and Kathryn Liknes has been cancelled.
They have arrested a man in connection with the family's disappearance.
A source to CTV Calgary says Douglas Garland, a person of interest in the case who was questioned last week, is back in police custody.
Officers are not naming the man arrested because charges have not been laid.
Police will provide an update to the public at 3p.m. ET.