Paul Manafort, former campaign manager for U.S. President Donald Trump, departs after a bond hearing at U.S. District Court in Washington, U.S., November 6, 2017. REUTERS/Joshua Roberts

WASHINGTON, Oct 30 (Reuters) - Former Trump campaign manager Paul Manafort and his associate Rick Gates pleaded not guilty on Monday to money laundering and other charges filed in a probe looking into Russian interference in the 2016 U.S. presidential election.

Manafort and Gates appeared in federal district court in Washington after turning themselves into authorities earlier Monday.