Paul Manafort and Rick Gates are both under house arrest following their indictment and are considered to pose a “risk of flight” based on their charges and connections abroad, special counsel Robert Mueller said in a recent court filing.

Manafort, Trump’s former campaign chairman, was indicted along with Gates, his associate, by a federal grand jury on Monday on 12 charges, including conspiracy against the U.S., as part of Mueller’s investigation into Russian interference in the 2016 election and whether the Trump campaign colluded with the Kremlin.