Seattle, Washington (CNN) -- Investigators searching for the suspected killer of four Seattle-area police officers have rounded up several of his relatives and friends to keep them from helping him escape, a sheriff's spokesman said Monday. Police have brought in five or six relatives and other acquaintances of Maurice Clemmons, "and we expect that number to grow," Pierce County Sheriff's Department spokesman Ed Troyer said. Some of Clemmons' family and friends have been trying to help him elude police and seek treatment for a gunshot wound, and they have tried to divert investigators by calling in false leads, he said....