KEYPORT, N.J. (CBSNewYork) — Police in New Jersey were investigating a serious crash involving pedestrians Tuesday afternoon.

Investigators say it happened near Main Street in Keyport shortly after 3 p.m., when prosecutors say a vehicle struck a woman and her two grandchildren.

A witness told CBS2 he heard a loud noise, went outside, and saw three people hurt.

The three victims, as well as the driver and their juvenile passenger, were all rushed to local hospitals. The extent of their injuries weren’t immediately known.

Police remained on scene hours afterward, probing tire marks on the grass and a vehicle smashed into a telephone pole.

It wasn’t immediately clear what led to the crash, which remains under investigation.

Anyone who witnessed the accident or has information to assist the investigative team is urged to contact Monmouth County Prosecutor’s Office Detective Kristian DeVito or Agent Reginald Grant at 800-533-7443, or Keyport Police Department Detective Bureau.