To get all these warrants for house searching relative's homes - I'm thinking - they must have something to convince a judge he is a suspect in Somer's death.
Further more, digging out yard, I imagine, would require a pretty specific warrant - and - (I'm absolutley not an expert, so I'm asking) - wouldn't they usually NOT have a digging-around-the-yard warrant for a straightforward digital porn case?
I think they have stuff back from forensics that links JH to Somer.
Alternatively, his Aunt or other relative turning in a lunch box works too. But ... given her initial reaction, JH's Aunt seems to feel he's just the Pillsbury Doughboy. So, I'm thinkin' it's warrants based on links made via the forensics lab.
Also to think that's the situation - and they have nailed him - make me sleep better at night.