Investigators said Najibullah Zazi has admitted attending courses and receiving instructions on weapons and explosives at an al Qaeda training facility in Pakistan's tribal areas during a 2008 trip.

CNN: Source: Feds seek about a dozen people in terror investigation

Investigators said Najibullah Zazi has admitted attending courses and receiving instructions on weapons and explosives at an al Qaeda training facility in Pakistan's tribal areas during a 2008 trip and lied to federal agents about explosives-handling instructions they found on his computer.

CNN: Bail set for terrorism suspect in Colorado

During those interviews, investigators said Najibullah Zazi admitted he attended courses and received instructions on weapons and explosives at an al Qaeda training facility in the Federally Administered Tribal Areas of Pakistan during a 2008 trip there.

CNN: Terror suspect: 'Our phone call is being monitored'

The assault was delayed for days, first to allow President Hamid Karzai to return from a trip abroad, and then to give Afghan officials time to try to convince tribal elders from Marjah to align themselves with the government and talk the town's young men into putting down their arms.

WSJ: U.S. Starts Afghan Surge

Shahzad had just returned from a 5-month trip to Pakistan where he admitted receiving training in making bombs in Waziristan, a lawless tribal area along the Afghan border known as a terrorist haven.

CENTERFORSECURITYPOLICY: Center For Security Policy