A man killed a woman and her dog, injured three, and was shot dead by a trooper on the D.C. Beltway.

A man fatally stabbed a woman and her dog, and injured three others on the Beltway near Washington, D.C., before being shot dead by a state trooper. The attack occurred on a highway in the metropolitan area, prompting an immediate law enforcement response. The woman and dog died at the scene; the three injured victims were hospitalized, with their conditions unconfirmed. Authorities say the trooper acted in what was described as a life-threatening situation. The suspect’s motives, mental state, and background remain unknown, and investigators are working to determine the full details of the incident. No further information has been released.