What is commonly done after establishing probable cause in a drug investigation?

Conducting a controlled delivery is a standard procedure that follows the establishment of probable cause in drug investigations. This method is used primarily when authorities have identified a specific drug shipment or package and have reason to believe that it contains illegal substances. By executing a controlled delivery, law enforcement can monitor the transfer of the drugs as they move from one point to another, which can lead to the apprehension of suspects involved in the distribution and potentially uncover larger networks involved in drug trafficking.

This approach allows investigators to collect additional evidence, such as the identity of individuals receiving or handling the package, and can contribute to a more extensive investigation. Through this method, law enforcement can often execute further actions, such as arrests, during the act of dealing with the transported drugs, leading to a higher chance of successful prosecution.

The other options, such as filing a civil lawsuit, brief the media, or simply waiting for further instructions do not align with the operational procedures typically followed after establishing probable cause, which focus on active enforcement and evidence collection.