Brown University officials report that a student who complained of memory loss after drinking punch at a fraternity party tested positive for a date-rape drug, while tests on another student are pending.

The fraternity that hosted the party has now been suspended.

The student’s test indicated the presence of GHB (gamma hydroxybutrate); a test conducted on the second student is pending, reads the letter from Margaret Klawunn, vice president for Campus Life and Student Services at Brown.

GHB, which sometimes goes by the street name “street Ecstasy,” has a history of being abused because of its euphoric and calming effects, according to information from the federal Drug Enforcement Agency. GHB became popular among teenagers and young adults at dance clubs and “raves” during the 1990s and later gained notoriety as a date-rape drug.

The students who drank the punch at the Brown chapter of Phi Kappa Psi — the only fraternity at Sears House — reported “a rapid onset of intoxication,” beyond what would be expected for the amount they had to drink, and “memory loss for a significant period of time,” according an earlier campus-wide notice sent by Klawunn.

Brown has said that it suspended the fraternity which hosted the Oct. 17 event, the email states.