A shooter opened fire at a Connecticut elementary school Friday left at least 27 people dead, including 20 children.
The shooting was at Sandy Hook Elementary School in Newtown, Connecticut, which is about 60 miles northeast of New York City.
A law enforcement official briefed on the shooting said the gunman died from a self-inflicted gunshot wound and that one of the victims was the man's mother.
A law enforcement official says the suspect is 20-year-old Adam Lanza. A second law enforcement official says the boy's mother, Nancy Lanza, was dead at her home. Officials say Adam Lanza's older brother, 24-year-old Ryan, of Hoboken, N.J., is being questioned by police. An earlier report from a law enforcement official mistakenly transposed the brothers' first names.
State police Lt. Paul Vance says that staff and students at Sandy Hook Elementary School in Newtown are among the victims.
A law enforcement official says some guns owned by the mother of the gunman in the Connecticut elementary school rampage match the models of the guns used in the shooting. The official cautions that investigators haven't conclusively linked the guns used in the rampage to the ones the woman owned.
The official says state police records show the woman had legally purchased five firearms and all were registered in Connecticut. Authorities are still trying to account for all the guns.
Police say Lanza apparently drove to the school carrying at least two handguns and a .223-caliber rifle and carried out the massacre. Law enforcement officials are trying to learn as much as possible about the 20-year-old and questioning his older brother, who is not believed to have any involvement in the rampage.
So far, authorities have not spoken publicly of any possible motive.
Officials say Newtown police called state police around 9:40 a.m. A SWAT team was among the throngs of police to respond to the school, about 60 miles northeast of New York City.
A dispatcher at the Newtown Volunteer Ambulance Corps says a teacher was shot in the foot and taken to Danbury Hospital.
Ambulances surrounded Sandy Hook Elementary School in western Connecticut and parents were running toward the building as a helicopter flew overhead. Photos from the scene showed young students - some crying, others looking visibly frightened - being escorted by adults through a parking lot in a line, hands on each other's shoulders.
The attack comes less than two weeks before Christmas and appears to be the nation's second-deadliest school shooting, exceeded only by the Virginia Tech massacre in 2007.
(Watch live coverage from WSFB in Hartford, Connecticut)
Hundreds of people packed a church in Connecticut to remember the victims. With the church filled to capacity, hundreds of people stood outside Friday night at the St. Rose of Lima church in Newtown, some of them holding hands in circles and saying prayers. Others lit candles and sang "Silent Night."
Family members are relaying what children told them about the shooting at Sandy Hook Elementary School in Newtown, Connecticut.
A 6-year-old told his father that he was in his classroom when a gunman burst in and shot the teacher. Robert Licata says his son "grabbed a bunch of his friends and ran out the door." Licata says the shooter didn't say a word.
Stephen Delgiadice says his 8-year-old daughter heard two big bangs and teachers told her to get in a corner. His daughter is fine.
He says the shooting is alarming because his family always considered Newtown to be the safest place in America.
Seventeen-year-old Mergim Bajraliu heard the gunshots echo from his home and raced to check on his 9-year-old sister at the school. He says his sister heard a scream come over the intercom at one point. And he says teachers were shaking and crying as they came out of the building.
A tearful President Barack Obama addressed the nation. He said the country's leaders must "take meaningful action" regardless of politics in response to the mass shooting at a Connecticut elementary school.
The president teared up, at times using an index finger to wipe at the corner of his eyes, as he addressed the nation from the White House. He also paused repeatedly as he struggled to keep his composure while speaking of the children - ages 5 to 10 - who had died and the life milestones they now would miss. He said, quote, "Our hearts are broken."
Shortly before speaking, Obama ordered that U.S. flags be flown at half-staff on public grounds through Tuesday.
In Washington, D.C., House Speaker John Boehner has ordered flags at the U.S. Capitol lowered.
In Central New York, at least one school district is taking extra precautions.The superintendent's office says the district has locked down schools. Superintendent of West Genesee Central School District, Chris Brown, tweeted, "All is well in each of our schools but we will have some additional police presence while total details unfold from Conn. shooting."
(Information from the Associated Press was used in this report.)