While the expelled students aren't accused of aiding 21-year-old Saudi Air Force second lieutenant Mohammed Saeed Alshamrani - who murdered three US sailors and injured 12 after watching mass shooting videos the night before with three friends who filmed the attack the next day - several of them were found to have ties to extremist movements and/or were in possession of child pornography.

About a dozen Saudi trainees at the Pensacola base had been confined to their quarters as the FBI investigated the shooting as a potential terror attack, and the Pentagon initiated a review of all Saudi military trainees in the country, numbering around 850 students.

The Justice Department is expected to conclude that the Pensacola shooting was in fact an act of terrorism, according to a US official.

No co-conspirators have been charged as part of the investigation, and the Saudi government has pledged its full support. -CNN