A man had to be rescued after falling 20 feet down a ventilation shaft on the Georgetown campus.
The accident happened on Monday morning at 9:40 a.m. near the Yates Field House.
Fire officials said the man was airlifted from Georgetown for treatment, with serious to potentially life-threatening injuries. The person is not a student, according to authorities.
The investigation continues. Check back with NBC Washington for more updates as the story develops.