Divers are searching for Dito Khelkhelauri, the 24-year-old Georgian citizen who went missing in Poland.
The 24-year-old presumably died.
The police have reportedly found the young man's body and the backpack near the lake.
Witnesses say Dito Khelkhelauri jumped into the water.
The family does not rule out that he took his own life. He proves to have been subject to threats at work.
Family members have reportedly failed to reach Dito Khelkhelauri since Saturday.
The young man hails from Telavi municipality.
Dito Khelkhelauri left Georgia for Poland to find employment there four years ago.