As opposed to what, "locally" swiping Bitcoin?
> ... Bitcoin stored on a computer device the government had already seized in another case
Yeah that's your problem Mr. Prosecutor, you have no idea where bitcoins are "stored" or what the device you have seized is. Which leads me to think you are not qualified to "seize" this type of assets.
It's 2022, Bitcoin has been working practically non-stop since 2009, and governments and the medias have been claiming that only criminals/terrorists use Bitcoin for almost as long... you would think people in his position would know what private keys are and how to secure Bitcoin funds they pretend to "seize".
It's simple, like all crypto newbies this prosecutor has just learned: Not your keys, not your coins.
This apllies if you have keys and you are not certain you are the only one to have them... anyone else with these keys can/will most likely claim them before you.