Luka Rocco Magnotta is wanted by Canadian authorities on first-degree murder and other charges.
The porn actor is suspected of killing Jun Lin - a 33-year-old Chinese university student he dated - and posting the victim's body parts to Canadian political parties.
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South Korean officials said the hotline would help facilitate dialogue and reduce misunderstanding during times of tension.
The Gunners boss has announced he will step down at the end of the season.
Moya Greene will be pursuing ‘a range of other interests, including developing her portfolio career’.