Just a bit of in house cleaning.
The deceased is said to be in his late 20's, so probably just a young buck who trod on the wrong toes.
Used to happen all the time. Thankfully these days, gunmen running amok in Belfast are not nearly as common as they used to be.
Must of been a bit more serious than twocking though, otherwise the Black & Decker would have been used........... unless it's out of batteries again.