On Saturday evening, in the city of Huntingdon, Cambridgeshire, United Kingdom, a horrific knife attack took place on a train. The perpetrator attacked passengers, causing panic and fear among people. There are reports of injuries. Police immediately arrived at the scene and launched an investigation. Officials have urged citizens to remain calm and avoid the area while the operation to apprehend the perpetrator is ongoing. "This is a shocking and appalling crime," said a police representative. "We are doing everything we can to find the culprit and ensure public safety."