An ongoing Associated Press investigation has uncovered deep, previously unreported flaws within the Bureau of Prisons over the last few years, including widespread criminal activity by employees, dozens of escapes, the free flow of guns, drugs and other contraband, and severe understaffing that has hampered responses to emergencies.

President Donald Trump said in a social media post Sunday that he is directing the Bureau of Prisons to rebuild and reopen Alcatraz, the infamous former prison, as a place to “house America’s most ruthless and violent Offenders.