VANCOUVER, British Columbia (AP) — Canadian authorities say a gunman who roamed for hours through a sleeping Vancouver suburb shot four people, two of them fatally, as he opened fire at a casino, a center for the homeless and other locations before being killed by police. The attacks began in the wee hours in the bedroom community of Langley and continued until dawn, according to police, who initially suggested that the shootings had targeted homeless people. The first shooting occurred at midnight at the casino, with more shootings at 3 a.m., 5 a.m. and 5:45 a.m. The other shooting scenes were a bus stop and a highway.