The Saudi pilot that opened fire on Naval Air Station Pensacola last week, killing three, was reportedly infuriated after an instructor took to calling him “Porn ‘Stache” this past April. He went as far as filing a formal complaint over the nickname, citing instructor James Day in the report.

The report, which was first revealed by the New York Times, was written by the shooter, Mohammed Alshamrani, with assistance from two of his American classmates. It outlines an interaction that took place at the end of a day of classes when Day asked the small class if anyone had any remaining questions before he dismissed them for the day. When he reached Alshamrani, he reportedly referred to him as “porn ‘stache.”

“Laughing, he continued to ask, ‘What? Have you not seen a porn star before?’” Alshamrani reportedly wrote in the complaint. “After I did not respond, he just let go of the subject.”

In the complaint, it may be worth noting, the name was spelled “porn stash,” rather than the technically correct, “porn ‘stache.” Soon after the complaint was filed, the company that employs Day offered to have the instructor apologize for the incident. Alshamrani refused, opting instead to speak to Navy personnel that deal specifically with international students. Alshamrani was reportedly scheduled to fly with Day following the “name calling” incident, but complained and was able to have his flight rescheduled with another instructor.

“Appropriate personnel action was taken regarding the incident in question, corrective action was taken, the matter was closed back in April, and we have no further comment,” Brian Busey, the president of Delaware Resource Group of Oklahoma (the company in question) told the press.

A number of other employees of the Delaware Resource Group of Oklahoma have stated that they believe Day should have been reprimanded following the incident, but no such action was taken.

It’s unclear whether this incident had any connection to the shooting that took place earlier this week, or if it instead serves as an example of how Alshamrani didn’t quite fit in during his time training in the United States.

Authorities are currently investigating the attack that Alshamrani carried out last week as an act of terrorism. Little has been uncovered thus far regarding the Saudi 2nd Lieutenant’s motive. According to the SITE Intelligence Group, Alshamrani had published posts on Twitter and other social media platforms that seemed to echo talking points previously championed by now-dead Al Qaeda leader Osama Bin Laden. Alshamrani’s Twitter account has since been suspended. Classmates noted that upon his return to the United States from Saudi Arabia in February, he seemed to have become “more religious.”