Mahmoud Khalil's wife, Noor Abdalla, says his arrest by ICE agents was "one of the most terrifying" moments of her life

When federal immigration officials confronted Columbia University student Mahmoud Khalil inside his New York City apartment building earlier this month, his wife, Noor Abdalla, assumed it was a misunderstanding. She rushed upstairs to their apartment to get documents proving he was a U.S. green card holder.

"My husband was taken away from me in the middle of the night. It was one of the most terrifying times of my life. I don't think I've ever experienced anything scarier than that," Abdalla described during an interview with Erin Moriarty for "CBS Sunday Morning" airing on Sunday. It's the first sit-down TV interview Abdalla has given since her husband's arrest on March 8.