[Carriage Hill]

Don’t touch the bodies or weapon(s); the DA will charge you with Tampering With Evidence and other charges.

[Secret Agent Man]

You may have to touch the weapons if there are others around who may go for them, or if the attackers are still alive.

[House Atreides]

“Don’t touch the bodies or weapon(s); the DA will charge you with Tampering With Evidence and other charges.”
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ABSOLUTELY... with the exception of the caveat in post 14 up thread.