96 arrested in San Diego State drug bust

The undercover officers started to appear at San Diego State fraternity parties about six months ago.

They dressed like students, complained about their parents and professors, and talked freely and knowingly of things of great interest on campus: music, sex and drugs.

Soon they were accepted, with no questions asked. They were spotted at student hangouts on and off campus. They swapped cellphone numbers with other partygoers. They text-messaged their newfound friends.

The real students appeared to accept the pretend ones -- most but not all of whom were men. On a campus of 34,000 students, blending into the crowd was not difficult. Neither was collecting evidence of drug dealing and drug use.

On Tuesday, authorities announced that 96 young men -- including 75 students -- had been arrested on a variety of drug charges as a result of Operation Sudden Fall, which infiltrated seven fraternities on Fraternity Row and Fraternity Circle. Officials said the name of the operation referred to the prospect of sudden death from drug usage.

The investigation involved marijuana, cocaine, methamphetamine and Ecstasy.