Brown University has sanctioned two fraternities for holding unregistered parties last fall, including one where two students reported drinking alcoholic punch laced with a date-rape drug.
Officials at the Ivy League school in Providence, Rhode Island, announced the discipline against Phi Kappa Psi and Sigma Chi on Monday.
Phi Kappa Psi will lose university recognition for four years, including the loss of housing on campus. School officials say the fraternity hosted a party in October and two students reported drinking a beverage containing a date-rape drug.
School officials say Sigma Chi is being put on probation and losing its social and university privileges until the fall of 2016.
Brown officials say both frats created environments that "facilitated" sexual misconduct, but no members of the fraternities were charged with sexual misconduct.
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