HOLLYWOOD, Md. — Maryland State Police say a trooper-driven vehicle crashed into an ambulance, injuring three people.

Police said in a release that Trooper First Class Allison Oyler had emergency lighting equipment activated while working traffic enforcement in Hollywood on Tuesday when a Hollywood Volunteer Rescue Squad ambulance pulled into her path of travel.

Oyler was airlifted to Baltimore for treatment. The ambulance’s driver, 63-year-old Gregory Casoni, and 67-year-old passenger George Newton were also hospitalized. The conditions of all three were not disclosed.

Police say a preliminary investigation determined Casoni was at fault, and charges are pending. Further information hasn’t been released.

Copyright 2018 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.