According to Taus: "It was my initial investigation into the organized crime case which evolved into the Pizza Connection case that identified CIA involvement. And CIA's ugly head reared itself in many other FBI probes.

...

In a book called Compromised: Clinton, Bush and the CIA (SPI Books, 1994), authors Terry Reed (a former CIA operative) and John Cummings corroborate the Carone story in Tyree's lawsuit - a dirty and tangled web of drug- and gun-smuggling and money laundering in Arkansas during the late 1980s.

http://whale.to/b/dowbenko.html