http://sfgate.com/cgi-bin/article.c...MNGKTJCJOA3.DTL A California Highway Patrol officer fired at a speeding motorcyclist who refused to pull over Sunday afternoon, authorities said. It was unclear whether the shot struck the motorcyclist, who got away and was still being sought Sunday night, authorities said. The incident began at 12:07 p.m. on eastbound Interstate 80 in American Canyon, where a CHP officer clocked two motorcycles speeding at 85 mph, according to CHP spokesman Marvin Williford. The CHP officer began pursuing the riders and attempted to pull over both of them. One, however, exited I-80 at Red Top Road and then re-entered I-80 westbound while the second motorcyclist continued east on I-80. A second CHP officer was west on I-80 and had been monitoring the pursuit. At the Columbus Parkway exit in Vallejo, the officer pulled over a motorcyclist who matched the description of the first fleeing biker. The officer, however, realized he had the wrong biker when he spotted the fleeing motorcyclist coming off Columbus Parkway in his direction, Williford said. The officer stepped off his bike and waved for the fleeing motorcyclist to stop, but the rider instead accelerated toward the officer and the officer opened fire, Williford said. The motorcycle swerved away from the officer and continued on Columbus Parkway. Authorities are searching for a Kawasaki ZX6R 636 silver with black trim whose driver was wearing a dark helmet, a dark jacket and blue jeans. The motorcycle had no license plate. Police are also seeking the second motorcycle that continued on east I-80. The motorcycle is described as champagne colored with a paper license plate. Both motorcycles are of the same make and type possible 2005 or 2006 models. CHP officers ask that anyone with information in this case contact Lieutenant Johnson at the Solano Area CHP office at (707) 428-2100.