If they have his car, it is a simple thing to find his name. Perhaps it is in his parents name......
That’s a great point, and also may be trying to contact parents, relatives, etc.
Be a helluva thing to find out from the news your kid just killed 15 people, and was in turn killed by the police.
[f they have his car, it is a simple thing to find his name.]
Maybe he is part of a larger group...