A brief standoff that took place Friday at Lock and Dam 21 near Quincy might be related to a Minnesota kidnapping case, Adams County Sheriff Brent Fischer said.
One man is in custody and a woman is recovering at Blessing Hospital after nearly two weeks on the river, Fischer said.
"She just looked very tired. I'm sure she was stressed, worn out, distraught. If she's been going through this for a period of 2 weeks, I'm sure it's been quite an experience for her," the sheriff said.
Lock and dam officials were notified to be on the lookout for a boat that matched the description of one connected to the Minnesota kidnapping.
Adams County 911 received a phone call about 11 a.m. Friday and held the boat in a lock until sheriff's deputies arrived.
Fischer said that he's dealt with FBI agents from Springfield, Ill. and Coast Guard officials from St. Louis.
FBI spokesman Bradley Ware said there was little information he could release Friday afternoon.
The man taken in to custody will likely face criminal charges.
Officials from the Sheriff's Office talked the man off of the boat and took him in to custody. The identities of the people on the boat weren't immediately released by the Sheriff's Office.
We'll bring you more information on this story as it becomes available.