Context:

A man stabbed several people on the I-495 Beltway near Washington, DC—one person died and a dog was killed—and was shot by a Virginia State Police trooper in what officials described as self-defense; authorities say it does not appear to be terrorism, and lanes were closed during the investigation; the case is developing with updates expected.

Dive Deeper:

• Four people were stabbed on the Beltway, with three others sustaining non-fatal injuries; a dog was also killed during the incident, according to Virginia State Police.

• Responding officers encountered the suspect, described only as a male, who approached a trooper with a knife; the trooper fired in what police described as self-defense, killing the suspect.

• The victim who died was described as a woman, and the other victims' conditions were updated by officials as the investigation continued.

• The incident prompted the closure of several lanes on I-495 in Fairfax County as investigators worked to establish a timeline and gather evidence.

• Officials said the event is not believed to be terrorism-related, and the investigation remains active with authorities releasing new details as they become available.