Train services between Montrose and Arbroath have been disrupted due to a track safety inspection.
ScotRail warned travellers to expect delays in both directions on Friday morning.
The delays are expected to last until 11am.
ScotRail advised customers to keep up to date with any delays on their social channels and website.
The rail service provider has not yet confirmed the reason behind the inspection.
ScotRail has been contacted for comment.