(KAIR)--The subject of a Wednesday morning Missouri River search has been located.

KQ2-TV reports the person, believed to have been operating an ATV that crashed on U.S. Highway 36, was located by authorities at Mosaic Life Care, in Saint Joseph, Missouri.

The extent of his injuries have not been made public.

The early Wednesday morning wreck of the ATV apparently followed a pursuit of the vehicle by the Doniphan County Sheriff's Department.

Deputies discovered the wrecked ATV on the side of U.S. Highway 36 early Wednesday morning, but the driver was missing.

That led to a search of the nearby Missouri River, with that effort assisted in part by the Fire Departments of Elwood, Kansas and Saint Joseph, Missouri.

The suspected ATV operator's name has not yet been released. 

The Doniphan County Sheriff's Office, when contacted by MSC News Wednesday afternoon, said no comment was immediately being made about the case as the investigation continues.

Editor's note: Below is the initial story following the start of the search effort. 

(KAIR)--A search is launched for a missing person near the Missouri River.

KQ2-TV reports the search was launched early Wednesday morning by the Doniphan County Sheriff's Department, following the discovery of a wrecked ATV.

Authorities believe the vehicle was being driven from Kansas towards Saint Joseph, Missouri, on U.S. Highway 36.

The ATV was found crashed on the side of the highway, but the driver was not found.

Blood was discovered in the area of the wreck.

Fire Departments from Elwood and Saint Joseph are assisting with the search effort, which included the use of boats, equipped with search lights, on the river early Wednesday morning.

The investigation is continuing.