Robert Mueller, the former FBI director who as special counsel probed President Trump and Russian interference in the 2016 election, has died at age 81, per multiple reports Saturday.The big picture: Mueller's probe resulted in a series of criminal cases against people in Trump's orbit, and earned him the president's lasting ire."Robert Mueller just died. Good, I'm glad he's dead. He can no longer hurt innocent people!" Trump posted to Truth Social Saturday. Screenshot: Truth SocialDriving the news: Mueller died Friday night, the New York Times reported, citing his family.His family said last year he was battling Parkinson's disease. Flashback: In 2017, deputy attorney general Rod Rosenstein named Mueller to lead a probe into allegations Russia had conspired with others to interfere with, and influence the outcome of, the 2016 election. Mueller, who led the FBI for 12 years in the Bush and Obama administrations, spent nearly two years assembling a team and probing those questions.In the end, the report found no conspiracy between the Trump campaign and Russia, though it neither implicated nor cleared the president himself of obstructing justice. Editor's note: This is breaking news. Check back for updates.