Thalys train heroes decorated
Spencer Stone (2nd right) alongside Francois Hollande and his co-honorees from the train attackREUTERS/Michel Euler/Pool

French train attack hero Spencer Stone was stabbed in Sacramento, California, on 7 October, NBC News has reported. He was in a stable condition after undergoing surgery following the stabbing, which took place at midnight local time.

Stone, 25, was one of three Americans who prevented a terror attack on a French train in August. Stone was hailed as a hero after overpowering a Moroccan gunman on a packed train from Amsterdam to Paris. He was stabbed with a Stanley knife during his bloody struggle with Ayoub El-Khazaani and required surgery.

The Air Force said in a statement: "He is alive and in stable condition at this time. We do not have any information as to the events preceding the incident."

Sacramento Police said that they were called to a stabbing at the corner of 21st Street and K Street, but refused to confirm the victim's identity. A statement from the police said: "It is believed that the victim was out with a group of friends when a physical altercation led to the victim being stabbed multiple times in his upper body." Police then announced on Twitter that the incident was not related to a terrorist attack and that "alcohol is believed to be a factor".

Stone received France's highest commendation, the Legion of Honour, because of his bravery in stopping the terror attack. He was also praised by US President Barack Obama and UK Prime Minister David Cameron.

No arrests have been made in connection with Stone's stabbing.