BLOOMINGTON, Minn. (AP) -

A recent drug bust in Hennepin County yielded a record amount of fentanyl, a powerful painkiller.

Authorities say Bloomington police raided a home on Nov. 3 and seized nearly three-quarters of a gallon of the potent synthetic opioid, with an estimated street value of $275,000. The sheriff's office says it's the largest amount ever confiscated in Minnesota.

Officers also found marijuana, illegal prescription drugs and several firearms.

There were 18 fentanyl overdose deaths in Hennepin County between January and September. Music superstar Prince died of a fentanyl overdose in April.