US media reported on October 4, local time that law enforcement officers exchanged fire with gunmen during a routine inspection of passengers on the train at a station in Arizona.
A U.S. Drug Enforcement Administration agent and a gunman were killed, and two law enforcement officers were injured.
The Associated Press reported that just after 8 am, a task force composed of agents of the US Drug Enforcement Administration and the Tucson police boarded the train to conduct routine inspections of illegal funds, weapons and drugs.
The "Capitol Hill" reported that while law enforcement officers detained a person on the second floor of the carriage, another Hispanic man aged 20 to 30 opened fire.
ABC quoted the police as saying that a US Drug Enforcement Agency agent was killed in the shooting.
Tucson police rescued another injured US Drug Enforcement Agency agent from the train and took him to the hospital in a patrol car.
At present, the agent is in critical condition.
A Tucson police officer on the platform got into the vehicle for reinforcements after hearing gunfire and was shot. The current situation is stable.
Amtrak said that there were 137 passengers and 11 crew members on the train at the time of the incident, and there were no reports of injuries to these people.
The authorities said the gunman locked himself in the toilet on the first floor of the car after fighting with the police.
The gunman was later confirmed dead. The cause of death is unknown.
At present, another suspect has been arrested. It is not clear what kind of charges he will face or the relationship between him and the gunman.
Editor in charge: [Lu Yan]