The riderless motorcycle slid southbound on North Azusa Avenue some 400 feet until it came to rest just before Grondahl Street, Doonan added. The man was pronounced dead at the scene, Covina police Sgt. Ric Walczak said. His identity was not immediately released. No one else was hurt during the pursuit, he said. For more news and observations about crime in Los Angeles and the San Fernando Valley, check out the Daily News’ crime blog by clicking here.160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREWhicker: Clemson demonstrates that it’s tough to knock out the champ“West Covina police terminated the chase about 11:47 p.m.” near Lark Ellen Avenue and Arrow Highway, Plebani said. “He was just going too fast and we called it off because his speeds were making it unsafe to continue the pursuit,” he said. But even after the officers ended the pursuit, the motorcyclist continued to ride at high speeds, Plebani said. The helicopter crew witnessed the man traveling southbound on North Azusa Avenue just past Arrow Highway, where he lost control and was ejected from his bike, Covina police Lt. Tim Doonan told an On Scene Video camera crew. His body flew into a palm tree, Doonan said, and the man was killed instantly. COVINA – A motorcyclist who refused to pull over led officers on a pursuit that spanned four cities, flew off his bike and slammed into a tree, dying instantly, authorities said today. The pursuit began at 11:39 p.m. yesterday near the San Bernardino (10) Freeway at North Azusa Avenue, said West Covina police Lt. Marcos Plebani. West Covina police officers tried to pull the motorcyclist over for a traffic violation but he refused, and a chase ensued, Plebani said. The pursuit went over surface streets through West Covina, Covina and parts of Irwindale and Azusa at speeds of between 70 to more than 100 miles per hour, he said, adding that a helicopter unit kept track of the chase.