Rescue teams will resume their search Tuesday morning for a man who disappeared while wading in the Potomac River near Great Falls on Monday, authorities in Montgomery County said.

The 24-year-old man was in the water at the overlook near Old Angler’s Inn, when he apparently lost his footing and was swept away by the river current, said Assistant Fire Chief Scott Graham.

His friends were unable to grab him, and the man went underwater sometime around 8:30 p.m. Rescuers from Montgomery and Fairfax counties searched for the man in the dark for about two hours, but the search was called off for the night around 10:20 p.m.

The search is expected to resume at 8 a.m., Graham said Tuesday morning.

The victim’s name was not released.

From thundering falls to placid-looking shallows, deadly hazards lurk in water all along the Potomac River Gorge. Explore the dangers at Great Falls.