Update (9/20/19): Knoxville Police Department investigators have identified the body recovered from the Tennessee River by Knoxville Fire Department personnel on Friday night as the drowning victim from Tuesday night at Scottish Pike Park. He has been identified as Erik Phillips, 29. 

Friends held a vigil in Tyson Park Thursday for a missing man who disappeared in the Tennessee River as crews continue to search for him. Recovery crews have been searching the Tennessee River since Tuesday night after witnesses said they saw the man jump from a rail bridge while he was swimming with friends near Scottish Pike River Park.

Update (9/19/19): Authorities say they found a body in South Knox county near Riverbriar Road. KFD says it has handed the case over to the Knox County Sheriff's Office.

Update (11 a.m.): Crews with the Knoxville Volunteer Rescue Squad resumed the search Wednesday morning for the missing swimmer. 

They have not released any updates thus far.

Updated Story (9/18/19): John Whited with the Knoxville Volunteer Rescue Squad told 10News crew members were assembling as of 8:30 a.m. to resume the search Wednesday.

Whited said rescuers would begin searching near the Alcoa Highway Bridge, which is about a mile downstream of where the incident occurred. 

Original Story (9/17/19): Knox County search crews are looking for a potential drowning victim witnesses said jumped into the Tennessee River in South Knoxville.

Crews with the Knoxville Fire Department, Knoxville Police Department, Knox County Sheriff's Office and Knox County Rescue Squad have been searching the Scottish Pike River Park area near the railroad bridge since 7:50 p.m. Tuesday.

KFD captain D.J. Corcoran said witnesses told crews they saw a person jump off the rail bridge, saying they saw their head resurface and then go back under.

KPD is calling it a 'possible drowning,' saying witnesses claimed the person had been swimming with friends before they walked roughly halfway across the railroad bridge and jumped into the water.

The bridge crosses over the river near the Henley Street Bridge from Neyland Drive near the University of Tennessee campus to Scottish Pike in South Knoxville.

Corcoran said they will resume the search Wednesday morning if crews are unable to find signs of the victim before midnight.

This story is developing and will be updated.