OPP divers are headed to Thunder Bay to look for a 26-year-old man who went missing while diving from a cliff Wednesday afternoon on the MacKenzie River.

Police report three men and two women were diving in an area just off MacKenzie Heights Road in Shuniah Township.

OPP were told that the group had been diving into a pool of water off the cliffs. It was reported that after their second or third dive, one of the men didn't resurface.

Emergency officials were called and they searched the area.

Although the OPP dive team is expected to arrive Thursday, police said they may not be in the water until Friday.

Staff Sergeant Jim Graham, commander of the Thunder Bay detachment, told CBC News the divers will have to decide whether it's safe enough for them to go into the water.

"The rain from last night, or the water conditions in general, could aggravate the situation," he said. "My understanding is the water is relatively fast-moving in the area."

The identity of the missing man from Thunder Bay has not been disclosed.  OPP said he was swimming with his co-workers.

In July 2011 a 21-year-old Thunder Bay man died while diving at the same location on the MacKenzie River.