Dumfries and Galloway Police received a report last night (25th November), of a person seen falling into the river Annan, in the Everholm area, at around 6.30pm.
A search of the river was carried out by HM Coastguard, Nith Inshore Rescue, Moffat Mountain Rescue and the search and rescue helicopter.
Police say the river was very high and fast flowing at the time.
The search is due to resume at 10am today (26th November).
Police are urging anyone who may have been in the area of the River Annan near the Everholm on 25th November to get in touch.
More top news
ITV Border's political editor Peter MacMahon shares his thoughts on the Chancellor's spending review
A look ahead at the forecast for the Border region.
Safety experts are to carry out checks on all 37 holiday chalets where a 59-year-old man died of suspected carbon monoxide poisoning.