"You're not important enough to know my business," Rodolphus answered without missing a beat. He was the arm of the Minister of Magic, because he was the arm of his Lord - he had clearance to any part of the Ministry he damned well pleased.
Then again, his business in the Atrium had been, generally, to admire the gore of the new statue, which wasn't something he'd admit to anyone other than his wife.
He looked at Munch once more, and then shook his head. If he stayed speaking to him, he'd end up killing him, in front of witnesses, and while he would take a certain pleasure in the fact that no one would dare stop him, it was probably best to avoid the temptation.