An Amtrak worker was seriously injured and two others suffered minor injuries when an eastbound California Zephyr passenger train collided with a tanker truck carrying milk in northeastern Colorado. The incident occurred on Monday night near the town of Keenesburg, approximately 35 miles northeast of Denver.

According to the Colorado State Patrol spokesperson, Sgt. Troy Kessler, the injured Amtrak worker, a 42-year-old man from Utah, sustained potentially life-threatening injuries in the crash. The conditions of the injured passengers are currently unknown. Amtrak spokesman Marc Magliari withheld information about the worker's condition for privacy reasons.

The truck driver, a 31-year-old man from Arkansas, did not require hospitalization, and it is unclear if he sustained any injuries. While the crash is still under investigation, Sgt. Kessler attributed fault to the truck, although it remains unknown if the truck was stationary or in motion at the time of impact.

Amtrak confirmed that there were 69 passengers on board the train, which operates between Chicago and the San Francisco Bay area. Fortunately, all the passenger cars remained upright, preventing further injuries.

Due to the incident, the tracks where the derailment occurred were closed for repair operations on Tuesday. Consequently, the California Zephyr's regular two-day trip was disrupted, and passengers were offered the options of refunds or rescheduling their travel plans.

Authorities will continue to investigate the crash to determine further details about the circumstances surrounding the collision between the Amtrak train and the milk tanker truck.