Overview

• Kimberley Jean Jespersen, 53, was struck in the crosswalk at 4500 South and State Street after an initial collision with a passenger car and later died at a hospital.
• Court filings state video analysis estimated the pickup at least 55 mph with an unsafe lane change just before she was hit.
• Investigators identified a 2014 GMC Sierra and say witness accounts and phone data place Nathan Michael Portillo behind the wheel.
• The probable cause affidavit alleges Portillo was intoxicated, driving erratically, and threatening a passenger who jumped from the moving truck.
• Portillo is jailed without bail on charges including murder, failure to remain at the scene, obstruction of justice, reckless driving, speeding, unsafe lane travel, driving on a suspended license, and threat of violence, and police say he tried to repair the truck to avoid detection.