Emily Hilliard, 21, killed, Susan Graham, 54, injured, taken to hospital, after a head-on crash on State Route 19, sends both cars down an embankment near Muddy Creek.

Beaver County woman was killed late Thursday night in a two-car collision on Route 19 in Butler County.

Pennsylvania State Police identified her as Emily Hilliard, 21, of Rochester.

Ms. Hilliard was driving a Toyota Paseo southbound on the highway in Muddy Creek shortly after 10:15 p.m. when she veered off the road onto the shoulder, Pennsylvania State Police said.

She got back onto the road but into the path of a Nissan Altima driven by Susan Graham, 54, of Butler, who struck Ms. Hilliard's car head-on, police said in a press release.

Both vehicles went down an embankment, Ms. Hilliard's vehicle coming to a rest on its roof. The extent of Ms. Graham's injuries were not available this morning.