@Catmandoo The hunters that were killed were in a "motorized vehicle restricted area" in a watershed called American Creek, and had hiked in. When they were a day late returning to their base camp on Hawkins Creek, a search party was sent out, and found them near the elk carcass, with a sow and cub still acting aggressively nearby. They were shot by the search party. Because of the time taken to find them, no precise time for the attack could be determined.
My 2 buddies that were charged at their campsite had just returned at sunset.
Both of these incidents occurred within a few km of the point where the borders of Idaho, Montana, and BC meet,
My own encounter was several years earlier, and about 800km north of there, and happened mid morning.
Another buddy, with whom I was camping this past weekend at Sasquatch Provincial Park, was treed by a grizzly back about 1990 while hiking off the Duffy Lake road. The bear came at him through the brush, he described it as a ship leaving a wake as it came at him. He was unarmed, so scrambled up the nearest sturdy tree just as the bear got to it's base. As he was climbing, the bear reached up and tore his fanny pack off, leaving a scar on his butt that is still there to this day. The bear made a fuss under him for about 15 minutes, which he said felt like an eternity, then left. He waited another hour before coming down and high tailing back to his truck.