Cho Seung-Hui, a student identified as the gunman who killed 32 people at Virginia Tech University, is seen in this police handout released April 17, 2007. Cho, 23, a senior in the university's English department who lived on campus, was behind the massacre in the deadliest shooting rampage in modern US history, the university said. (Xinhua photo)

US campus shooting (Xinhua photo)

The police Tuesday identified the suspect of the Virginia Tech shooting as Cho Seung-Hui, who killed 32 people before taking his own life Monday.

"He was a 23-year-old in the U.S. as a resident alien," Flinchum said at a press conference held at Blacksburg, Virginia where the university is located.

Cho was an undergraduate student in his senior year majoring in English, Flinchum said. He lived on campus at Harper Hall and his residence was established in Centreville, Virginia outside Washington.

Meanwhile, Colonel Steve Flaherty, Superintendent of Virginia State Police, said the same gun was used in the two shootings at the university, suggesting there was only one gunman.

Previous reports had said there was a possible second gunman still at large.

A total of two attacks took place at Virginia Tech Monday. The first attack happened at a dormitory around 7:15 a.m. and left two people dead, while the second attack took place at the campus two hours later.

A total of 33 people, including the gunman, were killed in the worst campus shooting rampage in U.S. history.

Virginian Tech President Charles Steger said earlier Tuesday that all classes for the rest of the week had been cancelled.

A memorial service will be held at the campus Tuesday afternoon and U.S. President George W. Bush will attend.

Before today, the deadliest campus shooting in the country took place in 1966 at the University of Texas in Austin, in which 17 people, including the gunman, were killed.

Founded in 1872, the state university has more than 25,000 full-time students. The school is best known for its engineering school and its powerhouse football team.

This CNN TV grab shows police carrying students out of a building at Virginia Tech after a gunman shot dozens of people on the university campus in Blacksburg, Virginia, April 16, 2007. A total of 33 people, including the gunman, were killed in the shooting rampage, university president Charles Steger said. (peopledaily.com)

Law enforcement officers rush to the crime scene on Virginia Tech campus after a gunman shot dozens of people on the university campus in Blacksburg, Virginia, April 16, 2007. (peopledaily.com)

This CNN TV grab shows police carrying students out of a building at Virginia Tech after a gunman shot dozens of people on the university campus in Blacksburg, Virginia, April 16, 2007. A total of 33 people, including the gunman, were killed in the shooting rampage, university president Charles Steger said. (peopledaily.com)

A total of 33 people, including the gunman, were killed in the shooting rampage took place in Virginia Tech, university president Charles Steger said at a press conference on Monday. The identity of the gunman was not known yet because he did not carry any ID, Steger said. More information about the shooting accident is expected Tuesday as investigation goes on. (peopledaily.com)

Editor: Yan