Police say they hold grave fears for a young man missing in the Mary River south of Gympie since midnight.
- The 20-year-old was trying to swim across the river when he disappeared
- Friends searched before calling for help just after midnight
- Police are concerned for his safety but are hoping for a positive outcome
Police divers have joined the search for the 20-year-old, who was trying to swim across waist deep water in the river at Traveston Crossing Road, just after midnight, when he went underwater…