The Metropolitan Police Department arrested Julie Hamp, Toyota Motor Corp.'s first female managing officer, on June 18 on suspicion of importing oxycodone, an opioid used to relieve pain. The drug is tightly controlled in Japan but can be imported into the country with a prescription if certain procedures are followed.
Hamp has since tendered her resignation via a lawyer, according to a statement posted on Toyota's website on Wednesday. She hasn't been able to speak with the company directly because she has been in detention since her arrest.
According to weekly magazine Shukan Shincho, Hamp is being held in a detention cell at a police station not far from the United Nations University in Tokyo's Shibuya Ward. She hasn't been formally charged yet and the odds are very high that she will be held for the entire 23 days allowed under Japanese law.