Portland police announced a monumental drug bust that happened along Interstate 5 that amounts to "one of the largest single-day seizures" in its history.

PORTLAND, Ore. (KOIN) — Portland police announced a monumental drug bust that happened along Interstate 5 that amounts to "one of the largest single-day seizures" in its history.

In a collaboration between the Portland Police Bureau and a multi-agency drug task force, the bust involving the seizure of an estimated $2 million of drugs happened on Thursday.

PPB said in a release, "investigators from PPB’s Narcotics and Organized Crime Unit/HIDTA Interdiction Taskforce seized 90 pounds of methamphetamine, 11 pounds of fentanyl, and 3.8 pounds of heroin during a highway interdiction on Interstate 5 in the Portland area."

Officials said they could not release specifics about the case as it is still an ongoing investigation.

According to investigators, "a significant amount of illegal narcotics" make their way into Portland by way of the I-5 corridor, which is a focus area for "ongoing enforcement and drug interdiction.