Factbox: 5 most recent deadly school shootings in the US

The Connecticut shooting is the third deadly school shooting to take place this year in the US. The other two occurences took place in April at Oikos University, where seven people were killed and in February at Chardon High School in Ohio, where three students were killed. Since Columbine in 1999, 210 people died in violent shootings in the US.

Listed are the five most recent deadly shootings to occur in the States in recent years.

April 2, 2012: Oikos University shooting, California.

One L. Goh, 43, a former nursing student at private Oikos University near the Oakland International Airport, sprayed gunfire on a classroom there Monday, killing seven people in one of the deadliest attacks ever on a California campus, according to police. He was arrested an hour later at a store in Alameda.

February 27, 2012: Chardon High School shooting, Ohio.

T.J. Lane, 17, took a 22-caliber pistol and a knife to a high school in Chardon, Ohio, and fired 10 shots at a group of students sitting at a cafeteria table before school, authorities said. Three students died. Lane was arrested outside the school.

April 16, 2007: Virginia Tech shooting, Virginia.

Seung-Hui Cho, 23, a student at Virginia Tech University in Blacksburg, Virginia., shot and killed 32 people in attacks two hours apart in two campus buildings. Cho, who was diagnosed with mental illness, killed himself. The university was found negligent for not alerting the campus after the first round of shootings.

October 2, 2006: Nickel Mines shooting, Pennsylvania.

Charles Carl Roberts IV, 32, a milk-truck driver, killed five girls ages 7 to 13 execution-style, then turned the gun on himself, in a one-room Amish schoolhouse in Nickel Mines, Pennsylvania. Five other girls were critically injured. The community focused on forgiveness and reconciliation after the shootings.

March 21, 2005: Red Lake High School shooting, Minnesota.

Jeffrey Weise, 17, went on a shooting spree at Red Lake High School on the Red Lake Indian Reservation in Minnesota. He killed nine people, including his grandfather, and wounded five others before killing himself.