(CNN) -- The Nebraska State Patrol seized nearly 120 pounds of fentanyl--enough to kill about 26 million people, the U.S. Drug Enforcement Administration said.
On Thursday, Nebraska governor Pete Ricketts announced the bust which was called the largest in Nebraska's history, and one of the largest in the U.S.
The drugs were seized during a routine April 26 on Interstate 80. According to CNN, troopers became suspicious of a semi-truck driving on the shoulder lane. When they searched the vehicle, they found drugs in a hidden compartment.
Authorities first believed they had mostly discovered cocaine, but further testing revealed it was all fentanyl, which can be a threat to anyone who comes into contact with it. It is possible to inhale the drug or absorb it through the skin.
According to CNN, the drugs are valued at more than $20 million.
The truck driver, 46-year-old Felipe Genao-Minaya, and a passenger, 52-year-old Nelson Nunez, both of New Jersey, were arrested on suspicion of possession of a controlled substance with intent to deliver.
With nearly 120 pounds, it could kill about 26 million. A dosage of 2 milligrams of fentanyl can be lethal for most people, the DEA said.
"This year is going to be a banner year, a record year in a bad way, in overdose deaths in the United States," said Matthew Barden, an associate special agent with the DEA.