Multiple people were killed and others seriously injured in a shooting at a Jehovah’s Witness hall in Hamburg, according to police. Six to seven people were reportedly killed during the event. A shot was fired after officers arrived on the scene and a fatally injured person was found on an upper floor of the building who may have been the shooter. Police have urged people not to spread rumours online and say the motivation for the attack is still being investigated. Hamburg’s mayor, Peter Tschentscher, has called the news “shocking”.