Former Trump campaign chairman Paul Manafort and business partner Rick Gates were asked to surrender to federal authorities on Monday.

Manafort and Gates were indicted on 12 counts, including conspiracy against the United States and conspiracy to launder money, the special counsel’s office announced Monday.

Manafort and Gates surrendered themselves to the FBI in special counsel Robert Mueller's first changes related to the 2016 Russia investigation.

Related: Paul Manafort, Rick Gates indicted on 12 counts, including 'conspiracy against the United States'

Paul Manafort, business partner Rick Gates surrender to FBI in Mueller investigation