The U.S. Justice Department’s internal watchdog is reviewing a Drug Enforcement Administration (DEA) tactic in which agents reportedly allow fentanyl to reach the streets to build cases against drug traffickers. The review focuses on whether the approach followed applicable policies and legal standards.

PBS NewsHour reports the watchdog examines government practices and related wiretap investigations where DEA may have learned of fentanyl deliveries in advance but chose not to intervene right away. The stated rationale is that acting early could jeopardize larger or more complex prosecutions. The Independent similarly describes the review as assessing the controversy around permitting fentanyl deliveries to continue.

Both outlets frame the inquiry as a review of law enforcement methods and decision-making, rather than an immediate determination of wrongdoing. The watchdog’s findings are pending, and the review is expected to examine how information about imminent drug shipments was handled and how decisions not to disrupt shipments were justified in pursuit of prosecutions.