How come after a suspect dies it seems they are no longer referred to as allegedly committing a crime?

I've thought of this a few times throughout the past few years, but watching ESPN report this morning on Jovan Belcher reminded me of it.

Suspects are always referred to as allegedly committing a crime until a trial is completed, but after they are dead it seems like they are referred to as absolutely committing a crime. How come the death of a suspect means that they are no longer allegedly guilty of committing a crime? Is there a legal precedent? If drugs were found in the Chief's training facility tomorrow, what's to stop someone from linking them to Belcher with circumstantial evidence, further tarnishing his name? (I realize what he is accused of at this point, but this is a thought exercise.)

I'm not speaking about legal briefs, etc, but the media at large, because that's the source I get this information from. (I'm not a lawyer and only took Criminal Justice 101. I've tried to not speak in absolutes in this post and I'm also tried to remain cognizant of the fact that my premise might be flawed.)