''Desimone Trifecta'' Agro called it.

Here's a few reason's from what I've gathered.

1.Billy Bats

2.Foxy Jerothe

3.Attempted rape of Karen Hill

4.Luthanza Hiest. (Least favourable motive, I seen somewhere that it was Burke who planned it as he didn't want to pay Tommy his cut. But giving Henrys story about how Burke was really upset about his death I doubt this one.)

5. Paul Vario didn't like him. (But that's mainly to do with number 2 as I also heard Paul Vario was having an affair with Karen Hill.)

If im wrong my bad but just a few reason's which you all probably know about anyways.