Anthony Fonseca ’04-’05 died in an apparent suicide in Winthrop House yesterday morning.

Fonseca, an economics concentrator from Lawton, Okla., known to friends as “Deuce,” was remembered on campus for his passion for filmmaking and his skills as a deejay.

Friends said yesterday they were shocked to hear of Fonseca’s sudden death. Although the official cause of death is still under investigation, Cambridge Police Department spokesperson Frank D. Pasquarello said that no foul play is suspected and that it appears that Fonseca took his own life.

Fonseca’s roommate, Jukay Hsu ’06, said he found Fonseca lying motionless on the ground around 9:30 a.m. yesterday morning. Hsu notified a neighbor, and the two then notified a resident tutor and called the police.

Hsu, a transfer student from Columbia, has moved to a different room in Winthrop. Fonseca’s roommate from the fall is studying abroad this semester.

Hsu said Fonseca seemed fine on Saturday night and was using his computer at around 3 a.m. Sunday morning, just before Hsu went to sleep.

Cambridge and Harvard Police Departments responded to the call from Winthrop yesterday morning, and Fonseca was pronounced dead at the scene, Pasquarello said.

Fonseca’s death is the second tragedy to hit Winthrop House in a little over a year. Marian H. Smith, Class of 2004, committed suicide in her Winthrop A-entry dorm in December 2002.

At least a dozen Harvard undergraduates and graduate students have committed suicide since 1990, although Harvard officials could not provide exact statistics yesterday.

Dean of the College Benedict H. Gross ’71 sent an e-mail to undergraduates yesterday afternoon informing them of Fonseca’s death.

“I extend my heartfelt sympathies to his Winthrop Housemates, friends, and classmates,” Gross wrote. “I know the entire Harvard community joins me in extending to his family our deepest sympathies.”

Approximately 150 students gathered yesterday at a House meeting to hear the news from Winthrop Masters Stephen Rosen and Mandana Sassanfar.

Counselors from Mental Health Services and the Bureau of Study Counsel were also on hand to comfort Winthrop residents.

College and Winthrop officials said they did not know whether Harvard will hold any memorial events for Fonseca.

Friends said they were shocked by the apparent suicide and said that Fonseca had not been acting unusually in the time preceding his death.