KALISPELL, Mont. (AP) — Officials are searching for a Montana man who went missing in Glacier National Park.

The Daily Inter Lake reports 66-year-old Mark Sinclair of Whitefish was last seen on the Highline Trail on Monday afternoon.

Rescue crews searched by ground and air for Sinclair on Wednesday.

Park workers at the Logan Pass Visitor Center saw Sinclair leave his keys and dog at his vehicle at the center's parking lot.

Park officials say search efforts were continuing Thursday.

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Information from: Daily Inter Lake, http://www.dailyinterlake.com

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