Update (12:30 p.m.) Police have removed the subject from the water and he is being transported up the river, presumably to the Coast Guard Station. The park is open.
Police swarmed to Grand Haven State Park on Thursday morning, Aug. 15.
According to a reporter on the scene, a pair of Ottawa County Sheriff's Office marine patrol boat is following around an individual who has been in the water since shortly after 11 a.m.
A Coast Guard boat is also in the vicinity.
Grand Haven Department of Public Safety Capt. Clint Holt said that there was an "incident" in Muskegon County. Following that incident, the subject came to Grand Haven State Park, where he became suicidal and swam out into Lake Michigan.
"We came out here to take custody," Holt said.
Police armed with rifles were observed heading out onto Grand Haven's south pier. Detectives retrieved a pile of clothing left on the rocks at the base of the pier.
Holt said there was a potential for the subject to be "armed and dangerous," although it is not thought that he is armed at this point.
Andrew LundBorg, acting supervisor at Grand Haven State Park, said the park is closed to incoming traffic to keep congestion down. When the incident first started, campers were advised to go inside as the subject at that point was believed to be dangerous.
More information will be provided as it becomes available.