The bipartisan report lays out more than a dozen findings regarding the assaults on Sept. 11 and 12, 2012 on the diplomatic compound and a CIA annex in the Libyan city of Benghazi. It says the State Department failed to increase security at the sites despite warnings, and faults intelligence agencies for not sharing information about the existence of the CIA outpost with the U.S. military…

“The attacks were preventable, based on extensive intelligence reporting on the terrorist activity in Libya—to include prior threats and attacks against Western targets—and given the known security shortfalls at the U.S. Mission,” the panel said in a statement.

The report also notes, chillingly, that the FBI’s investigation into the attack has been hampered inside Libya, and that 15 people “supporting the investigation or otherwise helpful to the United States” have since been killed in Benghazi. The report says it is unclear whether those killings were related to the investigation.