Forum:Weird thing that happens in GTA IV

I meant to type "weird"...

Anyways, I have GTA IV, and it's a great game. But there's this weird thing that happens whenever I'm causing a lot of trouble in the city. These guys in a sedan pull up to wherever I'm shooting people or stuff, and start shooting at me! I remember this happened to me once when I was trying to survive a couple of police officers. It was very strange, I didn't have an explanation for this!

Has this happened to anyone else? If so could you relate and please explain what this is/means?

Thanks,