Federal agents arrested eight people connected to a South Bay street gang on Thursday for allegedly trafficking drugs like heroin and pounds of methamphetamine out-of-state, as well as into a state prison, authorities said.

The indictment names 10 members and associates of the East Side Torrance street gang, the U.S. Department of Justice said in a news release. Two of the defendants were already behind bars for different cases.

Officials said the gang distributed meth and other drugs out of the South Bay and Harbor Gateway area.

The indictment alleges the gang trafficked several pounds of meth to Colorado, as well as smuggled meth and heroin into Kern Valley State Prison located in Delano.

Authorities said some of the defendants allegedly possessed firearms to maintain control of their “territory,” control trafficking and attack against rivals.

“Street gangs bring the twin plagues of narcotics and violence to their neighborhoods, endangering everyone who lives there,” Nick Hanna, U.S. Attorney for the Central District of California, said.

The indictment resulted from a three-year investigation by the FBI, the Torrance Police Department and the U.S. Drug Enforcement Administration, officials said.

“This case is a product of an excellent working relationship between federal and local law enforcement authorities, all of whom are committed to increasing public safety in every community,” Hanna said.