Hamilton police evacuated a number of residences on the south Mountain, as they investigated a suspicious package on Tuesday afternoon.
The homes are along a section of Rymal Road, from Upper Wentworth Street to Massena Drive.
The affected two-block stretch is also the location of the mountain police station, to which a man drove a suspicious item, just before noon.
Residents in the area were given the all-clear to resume normal activities, just before 5 p.m.
Police say they continue to investigate the incident.