Former Trump campaign manager Paul Manafort and his onetime business partner and protege Rick Gates surrendered to federal authorities on Monday as the first charges from the probe of possible Russian meddling in the 2016 U.S. presidential election were unsealed.

The pair appeared at FBI headquarters to be processed and left on their own recognizance after just a few hours.

The indictment against Manafort, 68, and Gates, 45, includes 12 separate criminal counts: conspiracy against the United States, conspiracy to launder money, unregistered agent of a foreign principal, false and misleading Foreign Agents Registration Act (FARA) statements, false statements, and seven counts of failure to file reports of foreign bank and financial accounts.

The government alleges that at least $75 million was moved by Manafort to offshore accounts without declaring the income to the government. Form there Manafort allegedly withdrew $18 million to fund a lavish lifestyle, and Gates pulled another $3 million out.