Someone splashed paint ALL OVER the inside of a car. How do I remove it?

How do remove the paint? I really need help ASAP. It's EVERYWHERE, I mean EVERYWHERE. Is it possible to remove the paint safely??? The seats are leather. Btw it isn't MY car but someone's I know, and I'm so worried about this situation. I don't know WHO did it, but I want to help them by removing the paint.