PATNA, June 21 -- A railway employee was killed while three others were injured in a collision between Awadh-Assam Express (12910) train engine and an inspection trolley in Bihar's Katihar district on Friday noon, police said. The mishap occurred between Kadha Gola and Semapur area, near Maharani village on the Barauni-Katihar down line under the Sonepur Railway Division limits of East Central Railway (ECR). Due to the incident, operation on the route has been halted and passenger trains are being controlled at other stations until the track is certified for operation. An ECR official said that the train was on its way to Dibrugarh from Lalgarh, while an inspection trolley of the engineering department was working on the site. Just then, the Awadh Assam Express came from behind and the train hit the trolley. People travelling in the trolley could not see the engine due to a turn, resulting in the accident. Of the four persons present on the trolley, three of them managed to jump off and one trolley man was killed in the accident. After the accident, part of the trolley got stuck in the train's engine. The railway trolley has been removed from the track. On getting information, a medical team has been dispatched from Katihar. Currently, all the injured have been admitted to the nearest health centre, where they are undergoing treatment. "This is an unfortunate incident. We are enquiring into the cause of this incident. Section cleared within thirty minutes. Preliminary report said the concerned official avoided safety protocol," said ECR CPRO Saraswati Chandra, adding clearance has to come up from GRP/local police after consideration of all checklists. The Bihar unit of the Congress posted a video from the spot. "We pray to God to give peace to the departed soul and speedy recovery to the injured," the party posted on X. "It is a matter of great concern that train accidents are not stopping under the Modi government. Passengers are forced to travel in the shadow of fear and terror," Congress said. The party claimed that in the last one year 98 train accidents have happened,26 people have lost their lives and 171 people have been injured....