( CNN) Here's a look at investigations into Russian meddling during the course of its 2016 presidential race between Donald Trump and Hillary Clinton.

Special counsel Robert Mueller and multiple congressional committees are looking into allegations that there was collusion between Russian operatives and Trump associates during the presidential campaign and transition.

Who's investigating election interference:
FBI – In July of 2016, the FBI launched a counterintelligence investigation into possible links between the Russian government and Trump campaign officials.