A schoolboy has shot dead nine people and then killed himself at a school in the US state of Minnesota.
The juvenile gunman, thought to be a local teenager, killed two of his grandparents before going on a rampage at the school, authorities said.
At least a dozen others were injured in the violence at Red Lake High School, which is on an Indian reservation, FBI spokesman Paul McCabe said.
It was the deadliest US school shooting since the Columbine killings in 1999.
''I looked him [the gunman] in the eye and ran in the room, and that's when I hid ''
Sondra Hegstrom
Witness
In April of that year, two teenage gunmen killed 13 people and themselves at Columbine high school in Colorado.
Police have launched an investigation into Monday's shootings on the Red Lake reservation, about 240 miles (390km) north of the state capital, St Paul.
The dead included a teacher, a security guard, two boys - including the teenage gunman - and two girls, Mr McCabe said.
Two more wounded pupils later died. At least a dozen others were injured, the FBI said.
One survivor, Red Lake pupil Sondra Hegstrom, told the Pioneer of Bemidji newspaper: "You could hear a girl saying, 'No, Jeff. Quit! Quit! Leave me alone. Why are you doing this?' Boom, boom, boom, and then no more screaming.
"I looked him in the eye and ran in the room, and that's when I hid."
'Grinning and waving'
A local fire chief was quoted as saying that a pupil had walked into the school while classes were going on.
Police shut down the school as they investigated the shootings
He said the youth was carrying several weapons, including a shotgun and a pistol.
He was "grinning and waving" as he fired, witnesses said.
Mr McCabe said all of those killed at the school were in one room.
"It will probably take us throughout the night to really put the whole picture together," Mr McCabe said.
The school - close to the Canadian border - has about 300 pupils.
Eyewitnesses are quoted as saying that the whole reservation has been locked down by police who have set up road blocks.
Before the school attack, the boy shot dead his grandparents at their house in Red Lake, officials said.
The reservation is home to native Americans of the Chippewa tribe.
The juvenile gunman, thought to be a local teenager, killed two of his grandparents before going on a rampage at the school, authorities said.
At least a dozen others were injured in the violence at Red Lake High School, which is on an Indian reservation, FBI spokesman Paul McCabe said.
It was the deadliest US school shooting since the Columbine killings in 1999.
''I looked him [the gunman] in the eye and ran in the room, and that's when I hid ''
Sondra Hegstrom
Witness
In April of that year, two teenage gunmen killed 13 people and themselves at Columbine high school in Colorado.
Police have launched an investigation into Monday's shootings on the Red Lake reservation, about 240 miles (390km) north of the state capital, St Paul.
The dead included a teacher, a security guard, two boys - including the teenage gunman - and two girls, Mr McCabe said.
Two more wounded pupils later died. At least a dozen others were injured, the FBI said.
One survivor, Red Lake pupil Sondra Hegstrom, told the Pioneer of Bemidji newspaper: "You could hear a girl saying, 'No, Jeff. Quit! Quit! Leave me alone. Why are you doing this?' Boom, boom, boom, and then no more screaming.
"I looked him in the eye and ran in the room, and that's when I hid."
'Grinning and waving'
A local fire chief was quoted as saying that a pupil had walked into the school while classes were going on.
Police shut down the school as they investigated the shootings
He said the youth was carrying several weapons, including a shotgun and a pistol.
He was "grinning and waving" as he fired, witnesses said.
Mr McCabe said all of those killed at the school were in one room.
"It will probably take us throughout the night to really put the whole picture together," Mr McCabe said.
The school - close to the Canadian border - has about 300 pupils.
Eyewitnesses are quoted as saying that the whole reservation has been locked down by police who have set up road blocks.
Before the school attack, the boy shot dead his grandparents at their house in Red Lake, officials said.
The reservation is home to native Americans of the Chippewa tribe.
