A woman has been arrested after stabbing five people on a bus in Siegen, Germany, leaving three in critical condition. The incident occurred around 7:40 PM on Friday evening, according to the Dortmund Police. The bus, carrying approximately 40 passengers, was en route to the Siegen city festival when the attack took place. Police apprehended the 32-year-old suspect at the scene. Authorities are currently investigating the motive behind the attack and ensuring public safety. The crime scene remains cordoned off as police collect evidence and interview witnesses. Police are also urging the public to refrain from spreading misinformation on social media, particularly regarding any possible terrorist connection. Investigations are ongoing.