"The scale of the hand grenades use in Sweden is unbelievable. In all other comparable countries, both inside and outside the European Union, illegal grenades are not used at all," the sources told Radio Sweden.
In 2014, police registered only eight cases involving storage or use of the hand grenade-related cases, while there were 45 similar cases in 2015 and 20 such cases were registered within the first six months of 2016, the radio reported.
Sources suggested that the problem lies in the fact that hand grenades do not count as a weapon in Sweden.
Earlier in August, a 8-year-old boy died after a grenade thrown through a window exploded in a room where he slept.