This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.A pedestrian was struck and killed by a speeding motorcyclist who was fleeing from officers in downtown Los Angeles overnight, authorities said. Officers initially tried to stop the 2013 Kawasaki Ninja 250 motorcycle for running a red light in unincorporated Whittier at about 11:40 p.m. Thursday, the California Highway Patrol stated in a news release. The motorcyclist, later identified as 27-year-old Brian Jesse Leon of East Los Angeles, refused to stop and led authorities on a pursuit that spanned the 605, 5 and 101 freeways at speeds over 100 mph, according to the news release. Leon exited the freeway on Alameda street around midnight and continued speeding at 50 to 60 miles per hour. After failing to stop for more red traffic signals, Leon eventually struck a male pedestrian who was crossing Arcadia Street within a marked crosswalk at Main Street, the CHP stated. The unidentified pedestrian was pronounced dead at the scene. Leon, who was wearing a helmet, suffered major injuries and was taken to a local hospital in critical condition. He has been arrested on suspicion of murder and evading a peace officer resulting in death, the CHP stated. Additional charges are possible pending further investigation. It was initially unclear if alcohol or drugs were a factor in the incident. Anyone with information was asked to call the CHP at 562-868-0503.