A Massachusetts trooper is hospitalized after a hit-and-run crash involving a cruiser and two cars on Allen Road in Billerica.

A Massachusetts State Police trooper is hospitalized with non-life-threatening injuries after a hit-and-run crash on Allen Road in Billerica on Wednesday afternoon involving a state police cruiser and two private vehicles. A fourth vehicle was also involved, but its identity and driver are unknown. Authorities have identified the suspect vehicle but have not made any arrests. The investigation is ongoing, with more details expected.