From my Law Enforcemnet Experience the following is some examples.
Controlled buys are just that. "Controlled"
A warrant for the purchase made may have been made by the State DA,DEA,or your local and/state law enforcement agencies.
If this is the case then knowledge beforehand was known about you before the buy. The LEO involved then sent out either an undercover officer or someone not employeed by them to purchase the controlled substance. THIS IS OFTEN VIDEO TAPED AND/OR RECORDED.
Several buys over as long as two to three years (although rare) may take place.
Another technique is one of an undercover officer driving
around with unmarked officers about 2 streets over. When the buy is made the marked units will move in. THIS IS A CONTROLLED BUY.
Other types of controlled buys that have stood up in court are indeed informants. They will work for the LEO's to do the buy. Most often they are wired. Sometimes not. So in the case of a trial the informant under State Law does not always need to or have to testify. It is the arresting officer that worked the buy that will testify. Confidential informants are just that. CONFIDENTIAL.
Here is a link concerning your 4th amendment rights and case history of different case's. One may foot your bill. Read through it.
In regards XXXXX XXXXX law as it pertains to your state. I find no specific procedures on Idaho. There is a Federal and National law in regards XXXXX XXXXX buys. The links below will assist you:
If you have trouble with some of these sites opening wait until monday. Due to security some agencies will shut the servers down until the normal work week.
Do not think that for a min. that they do not have audio or video. And like I said above the informant is confidential. And may not even have to testify in court. Their name may even remain secret.
I would stronly advise you to obtain legal counsel. Meth. is the number one growing drug problem in America today. Far surpassing Cocaine and its abuse. Meth. is highly addictive and cause's massive phsyical damage over time.
I will give you the benefit and say as the Law Enforcement Agency should say..........innocent until proven guilty. And that burden is on them and not you. Retain an attorney if you have been formally arrested.
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My answer is based on info provided by your posting.