Shamsud-Din Jabbar visited New Orleans twice, and traveled to Egypt and Canada, before a burst of violence early on New Year’s Day that killed 14 people.

Recordings and interviews detail Shamsud-Din Jabbar’s growing discontent with American society and increasing isolation even within his local Muslim community.

A man who pledged allegiance to the terrorist group carried out a deadly attack in New Orleans on New Year’s Day.

Bomb-making materials were found at a short-term rental house, and the authorities said they had recovered a transmitter intended to set off explosives on the city’s famous Bourbon Street.

The two episodes have superficial similarities, including that both suspects used the same car rental app.

The president-elect said on social media that he was right about fearing criminals on the other side of the border. Officials later identified the suspect as a U.S.-born citizen and Army veteran.