Is it possible to anonumously red flag the IRS / FBI /UST to conduct a federal audit / investigation on a CPA for misappropriation of funds/assets?

I cannot provide proof , but all the signs are there. A CPA in Glendale CA. , Clients include Paris Hilton. He also brags that he has a couple of local judges and police officials "in his hip pocket". He personally owns a fleet of very high end cars, multimillion dollar home / etc. Everyone who knows him refer to him as a criminal. I would like to know if I can successfully tip off the right government enough to converge on him , freeze/hold/confiscate his assets and conduct a thorough federal audit on his accounting practice and his clients. Also , get the local Internal Affairs dept. of the Glendale CA Police and judicial system involved in an investigation of those officials who employ said CPA. Done successfully this could very possibly become national news. Who do I go to , to implement the process? I absolutely know this guy is dirty but have no means to prove it or bust him.