RCMP Manitoba says a 13-year-old left her school at lunch and never returned.

Kylynn Kasto's family and RCMP Manitoba are concerned for the teen's wellbeing after she went missing Monday afternoon.

Kylynn Kasto(Supplied)

The girl was last seen at Hamiota Collegiate at around 12:15 p.m. leaving for her lunch break.

"She stated that she was headed towards the province of Alberta," RCMP says.

Hamiota is located an hour's drive from the Saskatchewan border, and 59 kilometres north-west of Brandon.

The teen is 5'2" and 110 lbs. She has brown hair.

Those with information on her whereabouts are being asked to call RCMP at 204-759-2344 or Crime Stoppers anonymously at 1-800-222-8477. They can also go online.