WALKER, Mich. (WOOD) — Crews spent hours on the Grand River in Walker Wednesday, looking for a man who went under the water Tuesday and did not come back up.

Between around 8 a.m. and 3 p.m., crews searched in boats with sonar, a drone and a police dog. Dive teams from Michigan State Police and the Kent County Sheriff’s Department were in the water.

No body was found, so the Walker Police Department said in a Facebook post that searches were expected to resume periodically Thursday and into the weekend, telling people they may see emergency crews in the area. If you spot the body in the water, call 911.

Late Tuesday morning, two people in a canoe reported seeing the man vanish into the water near the Johnson Park boat launch, north of Wilson Avenue. Crews responded in force and searched until nightfall without luck.

Crews said they had found items along the river that supported the canoeists’ report.

Police told News 8 Wednesday that they still had not taken a missing person report, which made them suspect the man may have been homeless.