"Leave without pay" is an HR status not a legal status. As he has been arrested only, they won't terminate his employment yet. He's no longer on duty and he's no longer receiving pay. However, he likely still has insurance and any other benefits.

Prosecutorial jurisdiction for this is Louisa not Richmond if that's where the files were found. Richmond is likely staying out of the way of Louisa's investigation and a possible Federal investigation assuming these images were received over the internet.

This is barely 48 hours after his arrest - I didn't read that he has been indicted yet.