(CBS) – A series of Chicago police raids led to the arrests of more than two dozen convicted felons and suspected gang members.

They’re accused of selling heroin spiked with a lethal drug.

CBS 2’s Sandra Torres reports.

“Thank god these people are being locked up,” says Barrett Kruse.

For he and his wife, there’s no better feeling than finding out something is being done to prevent the sale of fentanyl in the streets.

Their 22-year-old daughter, Rebecca Moore-Kruse, overdosed from pure fentanyl in February.

“Right when we ended up thinking everything was going smooth, she just had to try it one more time and the one time she ended up trying it, it ended up having to be 100 percent pure fentanyl,” the father says. “That needle didn’t barely leave her arm before she was dead.”

Friday, Chicago police and other law enforcement agencies announced the arrest of 33 individuals accused of contributing to the sale of that drug.

Out of the 33 individuals arrested, three were charged federally. Twenty-eight are documented gang members, and 25 are previously convicted felons.

“Those numbers tell a familiar story here in Chicago: repeat offenders who are back out on the streets to cause more harm in our communities,” Chicago Police Supt. Eddie Johnson says.

While there’s still more work to be done, for Mr. Kruse, it’s a step in the right direction.

“This is going to stop someone else from ending up dead,” he says.

These raids were done on the West Side, where much of the violence in the city occurs.