One of the cohort, Said Ali al-Shihri, became second in command of Al Qaeda in the Arabian Peninsula.
According to Peter Taylor, reporting for the BBC, his team found that the cohort of Saudis repatriated in November 2007 problematic.
He reported that five of the fourteen men in batch 10 escaped to Yemen, and joined jihadists there.
He is alleged to have tried to cross the Saudi border dressed in a Burkha, an all-encompassing female garment, armed with a suicide belt.
Taylor reports that Murtadha Ali Saeed Magram and Turki Meshawi Zayid al-Assiri remain at large.