A Coloradan who purchased an abandoned Douglas County storage unit found that it contained 1.7 million counterfeit fentanyl pills, plus several pounds of meth and fentanyl powder, law enforcement officials said Monday.

The discovery amounted to a record seizure of fentanyl in Colorado, according to the Drug Enforcement Administration, and the sixth-largest in U.S. history.

The unit was purchased at auction after its previous renter lapsed on its payments.

The new owner then called law enforcement, including the Douglas County Sheriff’s Office, after opening it to discover the pills. The unit also contained 12 kilograms of fentanyl powder and two and a half pounds of methamphetamine. Law enforcement subsequently learned that the unit’s previous owner had been arrested by the DEA in April, which is why the unit’s rent went unpaid.

Fentanyl is a synthetic opioid that’s at least 50 times more powerful than morphine. While it has legitimate medical uses, illicitly created fentanyl has become the dominant opioid on the U.S. drug market, and it fueled an overdose crisis that surged in Colorado and across the rest of the United States. The street version of the drug is primarily pressed into pill form, typically to mimic the look of other legitimate opioid pills.

“I want to thank the citizen who reported this discovery, the storage facility staff for their cooperation, and the deputies who responded quickly and professionally,” said Douglas County Sheriff Darren Weekly said in a statement. “Let me send a strong and unmistakable message: fentanyl and illegal narcotics will not be tolerated in Douglas County.”

The powder seized in the operation was enough to create another six million pills, the DEA said.

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Months after federal officials demanded voter data from Colorado and several other states, Secretary of State Jena Griswold and several peers are trying to determine what exactly the Trump administration is doing with the data.

“As Secretaries of State and chief election officials of our respective states, we write to express our immense concern with recent reporting that the Department of Justice has shared voter data with the Department of Homeland Security, and to seek clarity on whether DOJ and DHS actively misled election officials regarding the uses of voter data,” Griswold and nine other secretaries of state wrote in a letter sent Tuesday morning.

It was addressed to Pam Bondi, the U.S. attorney general, and Kristi Noem, the Homeland Security secretary.

Bondi’s Justice Department sent letters to Colorado and other states in the spring asking for voter rolls and, in some cases, it has sought more detailed data, including partial social security numbers and birth dates.

The state officials’ new letter asks Bondi and Noem whether the voter rolls were shared with Noem’s department, which has served as the tip of the spear in the Trump administration’s immigration crackdown, or any others. The secretaries of state who signed on are all Democrats.

Colorado provided some of the information requested by the Justice Department as required by law, Griswold said in an interview Monday. Other states, particularly those tasked with turning over more extensive voter data, refused; six of them have since been sued by the federal government.

Griswold said federal officials had provided shifting answers on whether the Homeland Security Department had been given access to the data that had been turned over to the DOJ, including from Colorado.

Heather Honey, the agency’s deputy assistant secretary for election integrity, told the secretaries of state in September that DHS hadn’t received or asked for the data, according to the secretaries’ letter. But the next day, the agency confirmed to Stateline that it was collaborating with the Justice Department to “scrub aliens from voter rolls.”

Six weeks later, on Halloween, the agency posted an administrative update indicating it was expanding a tool — used previously to ensure federal benefits don’t go to immigrants without proper legal status — to check voting rolls.

“We would like the attorney general and the secretary of the Department of Homeland Security to explain what they’re doing collecting mass voter data on American voters,” Griswold said. “It also looks like the DOJ or DHS misled secretaries of state.”

Attempts to reach both federal departments for comment Tuesday were not successful.

Griswold said some of her staff members also had a brief conversation with officials from the Justice Department’s criminal division earlier this summer. The federal officials asked if Colorado election officials had a way to report election crimes to the state attorney general, Griswold’s office said. State officials replied that they did, and the conversation ended.

The state officials request a response from Bondi and Noem by Dec. 1.

In addition to Colorado, the secretaries of state from California, Minnesota, New Mexico, Arizona, Nevada, Maine, Vermont, Oregon and Washington also signed the letter.