Jeremy O. Harris was arrested at Naha Airport after customs officers found 780 milligrams of MDMA in his tote bag upon arrival from Taiwan.Harris, known for his Tony-nominated play "Slave Play" and his role in the Netflix series "Emily in Paris," has been detained for nearly three weeks and faces potential charges under the Narcotics and Psychotropics Control Act.Authorities believe the drug was for personal use, and Harris has not publicly commented on his arrest.