AP is deliberately supressing any mention of his background.
Therefore, he’s Muslim.
Who else would be throwing grenades at Christmas shoppers and trying to kill two-year-olds.
There was also a suggestion on Drudge that it has to do with a Pakistani honor killing. My guess is that maybe the honor killer was involved with the judicial court mentioned in another article. Giving the Belgian judge a heads-up, maybe, to leave honor killers alone, because they are only following sharia law.
All speculative, but it’s typical that you have to read a dozen articles to figure out what the leftist press refuses to tell you.