Yes, althought I don't know the whole news story yet it would appear that he was murdered, apparently they have already arrested someone in conjunction with this. I guess in the fullness of time we will find out who the person is and what their motive was.
As ned says, I am sure that Bob would have wanted the game to continue, despite the terrible events out there.
The 1994 football WC didn't stop when Escobar was murdered - and that was directly linked to football. It's tragic event but I don't see why the cricket should be stopped.