The stabbing of three people at Manchester railway station on Monday night was being treated as terror related, British police said Tuesday.
The British police launched a "terrorist investigation" into the knife attack, which came on the New Year's Eve.
A 25-year-old man was arrested on suspicion of attempted murder after the incident shortly before 2100 GMT on Monday.
The three victims were taken to a nearby hospital in a serious but not life-threatening condition.
A woman in her 50s suffered injuries to her face and stomach, while a man, also in his 50s, has injuries to his stomach.
A British Transport Police (BTP) sergeant in his 30s was treated after he was stabbed in the shoulder, but has since been released.
The knifeman was heard shouting "Allah" on Monday night before he stabbed a police officer and two revellers at Victoria Railway Station in Manchester on the New Year's Eve.
Terrified passengers described hearing a "blood curdling scream" down the platform and were forced to run down the tram tracks after seeing a man wielding a 12-inch kitchen knife.
Two knives were recovered at the scene and a property is being searched in the Cheetham Hill area.
British counter-terror cops are investigating after the incident took place at Victoria Station, which, a combined mainline railway station, is situated to the north of the city center of Manchester.
The stabbing scene is close to the Manchester Arena, where terrorist Salman Abedi murdered 22 people in a suicide bomb attack in May 2017.
New Year's Eve fireworks display in Manchester's Albert Square went ahead with security increased after the incident.
