A man accused in the shooting death of a Missouri teen has been charged in a second shooting incident – both of which involve firing into cars on the highway.

Alyssa Wilson, 17, was shot and killed as she drove down Interstate 170 in Overland, Missouri, on 14 October. The teen was on her way to a Halloween party at St Louis Zoo, called Boo at the Zoo, when a suspect fired a single shot into the back of Wilson’s Buick Encore.

The shot struck Wilson in the back, incapacitated her, and sent her crashing into a concrete highway median, according to prosecutors. She was pronounced dead at Barnes-Jewish Hospital.

The suspected shooter, Willie James Herndon, 43, of Texas, had no known relationship to the teen.

“Alyssa was 17, excited about her life, excited about her future,” her father Robert Hickman said, as state charges were announced .…