GRANT COUNTY — The Washington State Patrol is seeking witnesses or anyone who might have information about a hit and run accident south of Mattawa early Wednesday. According to a WSP press release, patrol officers responded to a hit and run accident on State Route 243 and Columbia Boulevard near Desert Aire at approximately 3:49 a.m. Wednesday. An older model silver Chevrolet Cavalier traveling southbound on SR 243 allegedly struck a 14-year-old boy, then left the scene, continuing southbound, the press release said.