Amtrak has suspended train service between Seattle and Portland, citing “previous weather events causing an unforeseen track closure,” the operator said Friday evening. Details were not given.

Amtrak was working to put bus services in place on the route. Normal rail service is expected to resume Monday morning. Affected customers should contact Amtrak’s reservation center by calling or texting 1-800-USA-RAIL.

The closure affects the Cascades route, which runs from Vancouver, B.C., to Eugene, and Coast Starlight trains, which run from Seattle to Los Angeles. There are six daily round-trip Amtrak Cascades trains between Seattle and Portland and one Amtrak Coast Starlight.

Tracks closed last Saturday and Sunday following a landslide between Vancouver and Kelso.