The weapons used in Friday's shooting at Sandy Hook Elementary in Newtown, Conn., appear to have been legally purchased and registered to Nancy Lanza, the mother of the gunman,

law enforcement officials told NBC News

and

the Associated Press

.

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, according to reports.

Four 9mm handguns, one made by Glock and another by Sig Sauer, were recovered inside the school. An AR-15-type rifle also was found at the scene, but there were conflicting reports Friday night whether it had been used in the shooting, NBC News reported.

Officials told both news agencies that 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.

The gunman, identified as Adam Lanza was clad in black and allegedly used two 9mm pistols to kill 20 small children and six adults at the school. It was unclear how many shots were fired there.

In total, 28 people died in Friday's rampage, including the gunman, who was found at the scene, and a woman believed to be Nancy Lanza, found shot dead at a home in Newtown.

Under Connecticut law, people under 21 are prohibited from purchasing or carrying handguns. Adam Lanza was 20.

In 2011, Connecticut was rated the fifth toughest state on gun control by the pro-gun control Brady Campaign to Prevent Gun Violence. The rating system was based on a scorecard which gave points for each restriction the group favors.

The state scored 58 out of the possible 100 points.

Connecticut has a partial ban on possession of assault rifles, according to the Brady Campaign website. Certain brands and features are restricted. There are no restrictions on magazine capacity.

New Jersey ranked number two on the list and scored a 72 out of 100 points.