A US Foreign Service Officer killed a woman and a dog, and wounded three other people in a road rage stabbing attack over the weekend.

Jared Llamado, 32, attacked the four women in the southbound lanes of Interstate 495 in Fairfax County, Virginia at around 1.20pm on Sunday following what authorities said was a minor traffic collision.

Michele Adams, 39, and a dog died as a result of their injuries.

Dana Bonnell, 36; Mary C Flood, 37; and Heather Miller, 40, were also injured in the stabbing spree before Llamado was shot dead by a Virginia State Police trooper, authorities announced.

Llamado’s LinkedIn account shows he has worked as a diplomatic technology officer at the US State Department since September 2024, describing his role as managing the technology infrastructure and underpinning diplomatic operations.

State Department officials have since confirmed Llamado’s employment to Fox News Digital, calling him a ‘Foreign Service Officer,’ and adding: ‘We extend our deepest condolences to all those affected by this tragedy.’

Dispatch audio indicated that the situation escalated rapidly following the collision, with a dispatcher reporting that multiple victims were in the roadway.

When a trooper then arrived at the scene, Llamado confronted him with a knife, and the officer opened fire in self-defense, Virginia State Police said. 

Jared Llamado, 32, killed a woman and a dog, and wounded three other people in a road rage stabbing attack

Officials said the attack came after a minor traffic collision on Interstate 495 in Fairfax County, Virginia on Sunday afternoon

Llamado was then transported to a local hospital, where he succumbed to his injuries, while the trooper remained unharmed. 

He is now on leave pending the outcome of an investigation into his use of force. 

State Police said they are also investigating the cause of the crash.

This is a breaking news story and will be updated.