Federal agents raided an underground nightclub in Colorado early Sunday morning and detained more than 100 people who they said were undocumented immigrants, according to the Drug Enforcement Administration.

The raid occurred at a club in Colorado Springs, about 70 miles south of Denver. Federal officials said there were more than 200 people inside the club at the time, including 114 who were in the country illegally. More than a dozen active-duty members of the U.S. military were detained as well, they said.

Officials said agents found weapons and illicit drugs inside the nightclub, including cocaine, methamphetamine and a mixture of powdered drugs known as pink cocaine.

Jonathan C. Pullen, the DEA Rocky Mountain Division special agent in charge, said in a news conference that the club had been under law enforcement surveillance for months and that “drug trafficking, prostitution and crimes of violence” had been taking place inside the club.

Mr. Pullen said that Immigration and Customs Enforcement took custody of the immigrants detained at the club. He said the members of the military were “running security at the club and involved in some of these crimes.”

The service members were handed over to the criminal investigation division of the U.S. Army.

A spokeswoman for Fort Carson, an Army post in Colorado, said in a statement on Sunday night that “there were some Fort Carson service members present at the location during” the raid.