Stranger Things étoile, star apologizes after being detained at airport for alleged drug possession 

The British actor, who portrays Jonathan Byers on Netflix’s coming-of-age, sci-fi show

 was detained at Los Angeles International Airport on Saturday for alleged cocaine possession. According to law enforcement, Heaton, 23, was sent back to the United Kingdom but not arrested.

“My planned travel to the U.S. last week was affected by an issue at U.S. immigration, and I am working to rectify it as soon as possible,” he tells PEOPLE in an exclusive statement. “I do want to clarify that I was not arrested or charged with a crime, and cooperated fully with the U.S. officials at LAX.  I’m sorry to all the fans and my

family for missing the premiere. We are all so proud of this season and I would never want this story to negatively impact the show.”

stars  Millie Bobby Brown, Winona Ryder, Gaten Matarazzo, Noah Schnapp, Finn Wolfhard, Natalia Dyer, Caleb McLaughlin, and Dacre Montgomery celebrated season 2 of the hit series — available for streaming now — in L.A. on Thursday night.

“The first season was an homage to the ’80s, but this one is darker and more emotional,” Brown, 13, previously told PEOPLE. “And the last two episodes are like an epic blockbuster action movie.”

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