The body of a man has been retrieved from the Missouri River in Mandan and police suspect it is the body of Gregory Fredericksen, 27, of Bismarck, who jumped from the railroad bridge on Aug. 8.

Bismarck Police Deputy Chief Dan Donlin said the Morton County Sheriff’s Department dispatch received a 911 call from a driver crossing the Memorial Bridge at 3:50 p.m. The driver told the dispatcher that he thought he saw a body floating down the river.

At 4:02 p.m., the Sheriff’s Department received another 911 call, this time from someone at Captain Freddy’s who reported seeing a body floating in the river between the Memorial Bridge and the Expressway Bridge, Donlin said.

Someone on a Jet Ski near the Marina Bay area was able to grab the body, which was floating south, until officials from the Sheriff’s Department and the North Dakota Game and Fish Department were able to meet them. Officials pulled the body to shore, where the Morton County Dive Team was waiting.

The body, that of a white man wearing shorts, was transported by ambulance to the state medical examiner’s office for an autopsy.

Donlin said Fredericksen’s family has been notified.

“We believe it’s him, but we can’t be 100 percent sure until the state medical examiner completes the autopsy,” he said.

Reach reporter Mara Van Ells at 250-8251 or mara.vanells@bismarcktribune.com.