KECKSBURG (AP) — Authorities said two people are dead from a lightning strike in a Pennsylvania county park.

Westmoreland County Coroner Kenneth Bacha said Brendan A. McGowan, of North Huntingdon Township, and Kaitlyn A. Rosensteel, of Donora, both 18, died Thursday afternoon at Mammoth Park near Kecksburg.

He said bystanders started CPR, followed by park police, but they were unable to revive the victims.

Bacha said his deputies are investigating.

Strong thunderstorms moved through around 4 p.m., bringing a cluster of lightning strikes to the area around the park.