Manning, 29, was released from the U.S. Disciplinary Barracks at Fort Leavenworth, Kansas, at about 2 a.m., according to a brief statement released by the U.S. Army.
The former military intelligence analyst was convicted of providing more than 700,000 documents, videos, diplomatic cables and battlefield accounts to WikiLeaks, an international organization that publishes such information from anonymous sources.
Manning said in 2014 that he chose to disclose the classified information to expose truths about the civil war in Iraq “out of a love for my country.”
Before he left office, President Barack Obama commuted the final 28 years of Manning’s 35-year sentence. The decision angered national security experts who say Manning put U.S. lives at risk.