Conversation so far:
When was Najibullah Zazi Captured?
On September 19, 2009, authorities arrested Zazi.
where was Najibullah Zazi when he was captured?
Was Najibullah Zazi in any kind of trouble?
Zazi faced a possible life sentence without possibility of parole. In May 2019, it was announced Zazi would be released after serving 10 years due to cooperation with law enforcement.
Did they find anything on Najibullah Zazi when they pulled him over?
They did not find anything of note, and he was allowed to go.
Where was Najibullah Zazi going when he was pulled over?
On September 10, as he crossed the George Washington Bridge headed for New York City, Zazi was pulled over by Port Authority Police.

Question: Was Zazi being followed?
Self-contained rewrite: Was Najibullah Zazi being followed?