You don’t seem to be even sure yourself what you are talking about. He can have connections with PPP, MQM, or NONE of them. How could he have connections with BOTH?
And let’s assume for a moment that he did belong to either PPP or MQM. But then WHAT? He did it in his personal capacity. He was not directed by either Altaf or Zardari.
This is an act of individual(s), but its your racist prejudiced anti-Pakistan glasses that makes it look like a political issue to you.