Three people are believed to have died after being stabbed in the Scottish city of Glasgow, the BBC reported on Friday, without citing sources.
An eyewitness said she had seen people covered in blood being treated by emergency services and armed police on the scene at around 1215 GMT.
Greater Glasgow Police said: "Emergency services are currently dealing with an incident on West George Street in Glasgow."
"The street is currently closed off and the public are asked to avoid the area at present. The situation is contained at this time and there is no danger to the general public."
Last week three people died in the southern English town of Reading when a man wielding a five-inch knife went on the rampage in a park. Police said they were treating that incident as terrorism.