The five CIA informants arrested by Pakistan’s secret services include a Pakistani Army major serving as a doctor and the owner of the safe house used by the CIA to spy on Usama bin Laden in his Abbottabad compound, Fox News has learned.

A spokesman for Pakistan’s ISI intelligence service fiercely denied the arrest of the army major, saying the story was "false and baseless," but that’s because the army is desperate to defend its deeply tarnished reputation created by the raid that killed Usama bin Laden.

The fate of the arrested group is unclear. Both in the U.S. and Pakistan, the ISI is considered a sinister agency and there are genuine fears by American officials that the group most likely may never be seen again.