The largest rainbow fentanyl bust in New York City history was conducted by authorities Wednesday.

Over 300,000 pills and 20 pounds of powder were seized, which police say amounts to more than $9 million in value.

Two people are in police custody and facing a slew of charges including criminal possession of a controlled substance in the first and third degrees.

This news comes just a week after authorities seized 15,000 pills as a part of an ongoing fentanyl trafficking operation.