Man arrested after NSW double stabbing

A man has been arrested after two men were stabbed in southern NSW, one of them fatally.

The incident occurred about 4am on Monday in Cooma, with one of the men dying at Cooma Hospital after being stabbed to the torso.

The second man, a 19-year-old, was treated for stab wounds to the arm and remains in a stable condition.

Police arrested a 21-year-old man about two hours later. No charges have yet been laid.