Officers were called to the Central Oxford Mosque after an incident in a nearby alleyway between Cosin Close and Manzil Way on Wednesday (March 13) between 6.30pm and 7pm.
A man in his 40s was given first aid at the mosque before he was taken to hospital in an ambulance.
Thames Valley Police then opened an attempted murder investigation, believing the man and the suspect knew each other and were in the alleyway together.
READ MORE: Police descend on Oxford street after ‘stabbing’
The force set up a large cordon which blocked the public from a section of Manzil Way close to the mosque as well as the nearby Cosin Close and East Avenue.
Large numbers of police officers and vehicles could be seen while crime scene tape marked off sections to onlookers.
Forensics were also at the scene as well as two vans pulling up at around 3pm on Thursday afternoon.
The police have now announced these cordons have been taken down and that the public are free to return with the mosque staying open throughout.
READ MORE: Attempted murder investigation launched after ‘stabbing’ near mosque
A spokesperson for Thames Valley Police said: “Following a large police presence in and around the Cowley area, a number of scenes on Manzil Way and surrounding areas have now been lifted and are reopened to the public.
“The mosque has remained open throughout the incident and is still open to the community.
“We thank everyone for their continued support and cooperation in regard to this investigation.”
The man in his 40s is now in a stable condition in hospital and the force also confirmed the incident is not being treated as a hate crime.
The stabbing is understood to be unconnected to the mosque as worshippers gave first aid to a young man after he was allegedly stabbed.
READ MORE: Police scene as officers tape off alleyway following ‘stabbing’
Susan Brown, the leader of the city council, said she has been in touch with Thames Valley Police about reducing knife crime with the third incident in the past three weeks.
The council leader said: “Stabbings are rare in Oxford but recently we have sadly experienced several in just a few weeks.
“I have been in touch with Thames Valley Police after each of these events and am asking for an urgent meeting to see how we can work together to tackle the culture of knife crime.
“My thoughts are with all those who have been impacted by this and other knife crime in Oxford.
“Together we will work to make sure our communities are safe for everyone.”
Those with information on Wednesday’s incident should contact Thames Valley Police, either online or by calling 101, quoting the reference number 43240118465.