Transcript for Reward for Carjacking Suspects That Killed 3 Children
and to Philadelphia, where there is a reward tonight, more than $100,000 for anyone that can help after a carjacking that took a horrific turn. Two suspects jumping into an SUV, later losing control and running into a roadside stand, where children were raising money for their church. Three young siblings did not survive. ABC's Ron Claiborne tonight on the manhunt. Reporter: Philadelphia police are hunting for the two men they say carjacked an SUV and then plowed into a street corner where a family was selling fruit to raise money for their church. Three children were killed. Their mother, critically injured along with two others. Today, this makeshift memorial near where it happened. This just the latest in a wave of such crimes. The best estimate, there's an excess of 40,000 carjackings a year. Woman was attacked, carjacked. Accused of beating and carjacking a man. Police are looking for people who carjack. Reporter: One of the carjacking hot spots, northern New Jersey. Possibly because of its proximity to the port of Newark, from which luxury cars can be shipped overseas. The crime of carjacking has reached epidemic levels. In some areas, in recent years, particularly in Newark. Reporter: Now posted throughout the state, billboards like this, warning would be carjackers to think twice. One reason for the surge, anti-theft technology on newer cars that have made them harder to steal than unoccupied parked cars. And some tips to lower your risk. Look both ways before getting into your car. Something looks wrong, do not get in. If you are already driving, keep going, and where possible, drive in the center lane, David, which is harder for a carjacker to get to. We were talking about the children. What a horrible thing.
This transcript has been automatically generated and may not be 100% accurate.