University of Missouri student Riley Strain has been missing since 8 March.
The 22-year-old was partying with his fraternity brothers in Nashville when he was kicked out of a bar and became seperated from his friends.
After a fruitless search, the friends reported Mr Strain missing, kicking off over a week-long search for the college student.
Police have found no evidence of foul play in Mr Strain’s disappearance. Ground and air search efforts are ongoing. A police helicopter searched the immediate area around downtown Nashville, including a river bank where Mr Strain allegedly wandered near. Investigators using boats on the Cumberland River have found no trace of Mr Strain.
Mr Riley’s parents have joined his friends and police in Nashville to search for the young man.
“This is definitely the worst nightmare,” Mr Strain’s stepfather, Chris Whiteild, told News 2. “For him to go this long without talking is not normal by any means.”
Although officials were investigating whether the college senior had been overserved, the bar owners later said he was only served one alcoholic drink and two waters before being kicked out.
On 17 March, after days with little updates, his bank card was found near the river.