That happened to my work van, it was stolen and cleaned out, the cop that came to the shop said that when he saw it in the police yard, that it had been full of tools and retail goods, and that the boys who took it seemed to have only driven it around, without showing interest in all the stuff inside the van.
The tools and goods that I never saw again, a huge amount of expensive tools and goods.
Are you saying the police took the tools?
Happened to me once. My '63 Chevy Impala was stolen. I reported it to a police station. Next day a friend who worked for the police department said he saw it towed into the police impound lot. He said it was intact, my mag wheels, tuck 'n roll interior and everything else looked good. So I go to the police station, inquire, and get a release slip. At the impound lot, the employees tell me I'll need a flatbed truck to tow it home, that it was stripped - engine parts, wheels, etc. gone.
I told them that I had proof it came in intact, had friends on the inside, and I would be back in several hours and my car better be good to go or the D.A. would hear about it. I came back late in the afternoon and my car was all together, mags and all. Some cops are corrupt (not all but a few are, as I discovered after working with the department for a couple decades).