Federal authorities seized more than 250,000 fentanyl-laced pills in Connecticut as part of the FBI’s Operation Summer Heat initiative.

The FBI’s New Haven field office carried out the takedown alongside the Homeland Security Task Force, preventing the pills from reaching Connecticut streets, authorities said.

“Through Summer Heat, we are taking dangerous drugs off our streets, including the seizure of 23 kilograms of illegal pills, while working to disrupt violent criminal activity and protect our most vulnerable victims,” P.J. O’Brien, special agent in charge of FBI New Haven, wrote in a statement.

Authorities reported that 42% of pills tested for fentanyl contained a potentially lethal dose.

The operation was part of a broader law enforcement initiative aimed at disrupting violent criminal activity and drug trafficking.

“These results demonstrate the impact of strong law enforcement partnerships and our shared commitment to public safety,” O’Brien added.