[don-o]

I'd heard this before, but not that the officer's remark was "testimony."

They brought the officer who signed the affidavits to testify at property seizure hearings.

[Cboldt]

-- They brought the officer who signed the affidavits to testify at property seizure hearings. --

What the sentence in the article reminded me of, was a report that a police officer other than the one who signed the affidavit was asked to sign (either the same or similar), and refused because he knew/believed it was deficient for want of stating probable cause.