Provincial police in Grey County are searching for a suspect who is considered armed and dangerous.
The OPP says they received reports of an armed man on Side Road 5 in the Desboro area of Chatsworth Township, just before 3 p.m. on Thursday.
Some kids were also kept at the nearby Sullivan Community School past 4:30 p.m.
Officers have closed off Side Road 5, Side Road 6 and Side Road 7. People are asked to avoid these areas.
Anyone with information is asked to phone police or Crime Stoppers.