Surprise: Rahami visited Taliban stronghold in Pakistan

Rahami spent time in Quetta, Pakistan, and Afghanistan during a trip, from April 2013 to March 2014, the source said.

Quetta, a city of about 2 million people, is a known hotspot for insurgents and the reported home of the leadership of the Afghan Taliban.

“If they spent more than a few days, it raises suspicions that while they were there, they will have been recruited by terrorist groups,” national security consultant Richard Clarke said on ABC News’ “World News Tonight” Monday, referring to Rahami’s travel to the area.

A spokesman for the Taliban, Zabiullah Mujahid, told ABC News that there was no link between the Taliban and Rahami.