Douglas McAuthur McCain, an American with Minnesota and California roots, was killed over the weekend while fighting for the Islamic State in Syria, NBC News reported. He was killed in a conflict between two Syrian opposition groups.

The American was reportedly found with roughly $800 in cash and his U.S. passport.

Douglas McAuthur McCain was killed in Syria while fighting for the Islamic State. (Photo: Facebook via NBC News)

Douglas McAuthur McCain was killed in Syria while fighting for the Islamic State, NBC News reported. (Image source: Facebook via NBC News)

The 33-year-old called himself “Duale ThaslaveofAllah” on social media and put “It’s Islam over everything” in the bio. He was described as a “goofball in high school” who likely became radicalized after moving from Minnesota to California.

Via NBC:

Senior administration officials told NBC News they were aware that McCain was killed in Syria, adding that they believe dozens of Americans have gone there to fight with extremist groups – including, but not limited to, ISIS.

[...]

On June 9, Duale wrote to an alleged ISIS fighter on Twitter: “I will be joining you guys soon.” He also asked if another self-proclaimed ISIS fighter had made it to “r town” – an apparent reference to Raqqa, the militants’ Syrian stronghold.

Then came another post: “I’m with the brothers now.” Later, he retweeted: “It takes a warrior to understand a warrior. Pray for ISIS.”

Read the complete report, which has more information on McCain’s upbringing, at NBC News.