TMZ reported that, according to unnamed law enforcement officials, Transportation Security Administration officers found the weapon at a TSA screening. It was an M&P Shield 9mm pistol, according to the website.
"I take responsibility for the situation at LAX today," Henrie wrote in a statement posted on Twitter Monday. "I unintentionally bought my legally owned gun which is registered in my name to the airport. I am so sorry for any trouble it caused, but I am appreciative of TSA's efforts in implementing the safety laws that are in place to protect our beautiful country. More than anything I am humiliated and embarrassed that this even happened. But am thankful to the TSA, LAPD and all involved today for their kindness and their professionalism during this process."