One thing the LAPD should do is see if he bought those pre-packaged food packets. If he’s going to hide for an extensive period of time, he’s going to need a fair bit of food and it’s not that expensive to buy in bulk. For $10 grand, he could buy 3 - 5 years worth of food. Longer, if he has a secure place to keep a garden.
Not to mention at nearly 300 pounds, Dorner is carrying around a lot of food just as himself.