The death toll from a boating accident in Pakistan over the weekend jumped to 51, police said Tuesday, after a vessel overloaded with children capsized in the water.

Axar.az reports citing foreign media.

Rescuers spent three days diving in freezing waters to recover the drowned bodies of 49 madrassa students, aged seven to 14 years, as well as one teacher and one skipper.

"The water of the dam was freezing due to cold weather that impeded the rescue mission. But today the divers were able to dive deep to recover the remaining bodies," said Khateer Ahmad, a senior official of the Rescue 1122 service.

"More than 25 divers took part in the rescue mission that includes the divers from the army."