I just read on the morning news there was a boating accident on the Colorado River between Pirates Cove and Toprock. According to the report a Hallet and a Sleekcraft collided head on resulting in all the occupants of both boats being ejected and both boats sank. One person in critical condition was air lifted to Las Vegas, several were treated locally with non threatening injuries. Several survivors declined treatment, and 4 are reported as missing. Mohave Marine units responded at 8:00 PM, drivers did a preliminary search, but was called off due to darkness.