Long before the Mueller report, Robert Mueller served as a Marine in Vietnam, prosecuted John Gotti and overhauled the FBI.

The lawyer served as special counsel overseeing the investigation into Russian interference in the 2016 election.

Family says Mueller, who also examined Russian interference in 2016 election that Trump won, ‘passed away last night’

Ex-FBI chief Robert Mueller, who served as special counsel in an investigation into Russia's interference in the 2016 presidential election, has died.

Robert Mueller, former special counsel who investigated Russian interference in the 2016 presidential election, died Friday.

Mueller transformed the nation's premier law enforcement agency into a terrorism-fighting force after the September 11 attacks and later was special counsel in the Justice…

Robert Mueller, former FBI chief and special counsel, dies at 81, known for investigating Russian election interference.

A former FBI director, Mueller led the high-profile inquiry into alleged Russian interference in the 2016 US election

Long before the Mueller report, Robert Mueller served as a Marine in Vietnam, prosecuted John Gotti and overhauled the FBI.

Former FBI director and special counsel investigating Russian interference in the 2016 election Robert S. Mueller III died Friday at age 81.

The former Marine overhauled - and, supporters say, helped save - the FBI after the 9/11 attacks. Then he took on Trump in the probe of a lifetime.