A student at Paradise Valley Community College who died at a professor’s house in April suffered an accidental cocaine overdose, according to a medical examiner in Arizona.

Andria Ziegler, a 19-year-old student at the community college in Phoenix, died while visiting the home of her psychology professor, Michael Todd, 51, according to the East Valley Tribune.

A Phoenix police detective told the newspaper that Mr. Todd was not a suspect in the student’s death. College officials notified the professor in May that they planned to fire him for violating the institution’s ban on instructors’ having romantic relationships with students, according to the Tribune. —Eric Hoover