The family members of a missing 20-year-old Missouri college student are now offering a ten-thousand dollar reward for tips leading to his return.

Jesse Ross — a sophomore at the University of Missouri-Kansas City — vanished on November 21st. He was at a model United Nations conference at the Sheraton Chicago Hotel.

Ross is from Belton.

His family was initially offering a five-thousand dollar reward but say the announcement hasn't generated much of a response.

His father Don Ross says the family's goal is to bring the 20-year-old home safely.

Police divers have used sonar to search the waters around the Michigan Avenue Bridge where Ross was last seen.