Bears are increasingly coming out of the forest in search of food, say wildlife experts.
Hungry beast’s attack seen by anglers on other shore who shouted to warn him, but could do nothing to help.
Investigation underway into why 'peaceful' bear was shot by police on Sakhalin island, and whether its gallbladder was extracted for black market sale.
Rodion Burakov, 16, distracted beast allowing Boris, 13, to flee - but older boy was mauled to death, his torn body buried by predator.
Shortage of fish in rivers had led to hungry beasts prowling close to homes.
Body found buried some 200 metres from remote research facility 150 kilometres from Mirny.
Often bears encroaching towns are shot, but in Dalnegorsk they spared the life of 'too friendly' wild animal.
Vadim Klabukov, 23, paid with his life after flouting safety rules when he went to retrieve lost backpack in South Kamchatka nature reserve.
Fears another bear that also failed to hibernate for winter is also on the run near Vilyuchinsk.
Mitrofan Tretryakov, 69, was badly wounded, but managed to call rescuers as the predator escaped.