Latest developments: Police issue message -- "call us back." Two men questioned may be unrelated to case. Saturday's shooting linked to sniper. news_sniper_vancustody_1021_abc.jpg home Sniper Updates audio.gif rtsp://demand2.stream.aol.com/cnn/audio/topstories.rm?rpurl=http://www.cnn.com/ 10352103046280 CNN Audio lock_icon.gif superpass.gif http://abcnews.go.com/sections/us/videofiles/Video/021021sniper_video.ram 10352103046281 ABCNEWS Video (Members) lock_icon.gif lock_icon.gif big_headline