A woman who stopped to help out at the side of vehicle rollover in Niagara Falls was killed Tuesday night as she darted across a road.

Niagara Region police say the Good Samaritan was struck just after 6 p-m near the Queen Elizabeth Way in Niagara Falls where a vehicle had left the Q-E-W and rolled over onto its side in a ditch.

Another vehicle stopped and a 48-year-old female passenger got out to help, but was hit by an S-U-V as she crossed the road and was pronounced dead in hospital.

Police say the driver of the vehicle which rolled over suffered minor injuries while the driver of the SUV was not injured.