Go grab a warrant, Barney Fife!
In the meantime I’ll do a password-protected backup and then do a factory default reset of my phone because it was, um, unresponsive. Search away!
(Yes, there are forensics experts [they have plenty of free time since they aren’t working the IRS case] but in the meantime the local constabulary will be flummoxed.)
That's assuming that you still have possession of the phone, aren't in handcuffs and can just pull it out without getting shot like a panting chihuahua by the cops.