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(CNN) — The suspected gunman’s body was found in a classroom inside a Newtown, Connecticut, elementary school where authorities say as many as 20 were killed, including 10 children, a source close to the investigation told CNN’s Susan Candiotti.

Officials have not confirmed the exact number of people killed, but there are reports of at least 26 dead. There are also reports that at least 18 of the victims being children, with officials only saying that both students and staff are among the dead.

A male is being questioned by investigators in connection to Friday’s shooting at a Connecticut elementary school, a law enforcement source with knowledge of the investigation told CNN. However, he is not being called a suspect.

White House spokesman Jay Carney said he and President Obama “feel enormous sympathy” for the families of the children where the Connecticut school shooting occurred Friday. Asked about gun control policies, he said, “there is, I am sure — will be rather — a day for discussion of the usual Washington policy debates but I don’t think today is that day.”

A parent who was inside the school at the time of the attack said she heard what sounded like at least 100 rounds being fired. She said she saw two school employees who had died.

Hospital officials in neighboring Danbury said they were treating three people wounded in the shooting. Danbury Mayor Mark Boughton said the victims were in “very serious” condition.

The shooter is dead, a source with knowledge of the investigation told CNN’s Susan Candiotti. The suspect’s body is in a classroom at the school, the source said.

Police have recovered two weapons from the suspect, a Glock and a Sig Sauer, the source said. It’s unclear if police killed the suspect.

Police and teachers rushed students from the building as police swarmed the area shortly after the first calls came in, around 9:40 a.m. ET. Officials moved students to a nearby firehouse, where parents frantically sought information about their children.

Third-grader Alexis Wasik said police and teachers barged into her classroom and told students to hide in the corner.

“Everybody was crying,” she said. “And I just heard the police officers yelling.”

Aerial images from CNN affiliate News 12 New Jersey showed police officers armed with rifles following a dog into woods near the school.

Other officers, some in tactical gear, stood around the school with guns drawn, CNN affiliate WFSB reported.

All schools in the city were on lockdown Friday as police assessed the situation, state police spokesman Lt. Paul Vance said.

White House spokesman Jay Carney said the administration feels “enormous sympathy” for affected families and pledged federal support for state and local law enforcement.

Newtown is about 60 miles north of New York.

CNN’s Susan Candiotti and Meredith Artley contributed to this report.

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