Bride of Chucky Easter Egg - Directors Touch

In the beginning of the movie at the Lockport police evidence depository, you can see Jason Voorhees' hockey-mask and Leatherface's chainsaw on one case and Freddy Krueger's glove together with Michael Myers' halloween-mask on another. This is pretty cool becuse Ronny Yu, who directed the movie, also directed Freddy vs. Jason but why he chose to put Michael's and Leatherface's things in there is strange, but if anyone has a clue please post a comment.