This has got to be the one of the most underrated Islamic killers. He murdered four people in the United States back in 2014 and allegedly committed bank fraud in an attempt to fund Al-Shabaab. From April 27 to June 25, he committed his spree and was finally captured on July 18. He killed three people in Seattle and killed the last person in New Jersey.
I have twice spent large amounts of time trying to rediscover him because he's basically been memory holed from the internet. If you try to look up details relating to him, all you will see are articles about airstrikes and other incidents that have nothing to do with this spree. For example, I looked up, "Al-Shabaab supporter kills four in the United States" and I found nothing pertaining to this.
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