“A gentleman crossed some barriers and entered the pools, and he’s believed to have entered on a couple of occasions,” says Buxton-Carr. “On the third occasion, he jumped from a height and briefly surfaced, but appeared to be in some difficulty and returned under the surface.”

In a statement to CBC News, Parks Canada says the Johnston Canyon trail has now been reopened to the public. It had been closed to visitors since the incident occurred on Friday.

Parks Canada says it conducted “an extensive search of the area, including the upper and lower pools at the Lower Falls,” but they were unable to find the man .

“Due to ongoing hazardous water conditions, all available search efforts have been exhausted at this time, and recovery operations have been suspended,” the statement said.