A man in his 20s is being treated in hospital after sustaining a "stab wound to the chest" on Wednesday.
Police say the incident took place in at a home in Michael McCreesh Park, Forkhill on August 19.
Officers in Newry are appealing for information.
Detective Sergeant Johnston said: "We were notified by Northern Ireland Ambulance Service, just after 7.15pm, that a man had sustained a stab wound to the chest.
"The man, aged in his 20s, was transferred to hospital where he remains receiving treatment to injuries, which are not believed to be life-threatening.
"A 22-year-old man arrested on suspicion of attempted murder, was subsequently released unconditionally.
"Enquiries are ongoing, and I would appeal to anyone with information, or who noticed any suspicious activity in the area, to contact us on 101 quoting reference number 1778 of 19/08/20.”
A report can also be made using the online reporting form via www.psni.police.uk/makeareport. Alternatively, information can be provided to Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org.
