An NFL employe was seriously injured on Monday in a shooting at a New York City office tower that killed four people, commissioner Roger Goodell said in a statement.

The consistent belief from the NYPD, the mayor’s office, and city officials is that NFL headquarters was indeed the target of the attack. Reportedly the note in Tamura’s possession asked that his brain be studied following his death, which would be possible considering he died of a self-inflicted gunshot wound to the chest.

In an overnight memo to other employees, Commissioner Roger Goodell said the person was in the hospital and in stable condition.