Adam Lanza has been identified as the suspected shooter in the Sandy Hook Elementary School massacre in Newtown, Conn., the Associated Press reports.
Police initially identified the shooter as Ryan Lanza, the 24-year-old elder brother of Adam Lanza. According to the AP, the error occurred when a law enforcement official transposed the names of the two men.
State Police Lt. J. Paul Vance would not confirm the identity of the suspect in a 5 p.m. news conference, though he said that officials have "tentatively" identified the suspect.
The New York Post also reports that Adam Lanza was the suspected gunman.
At least 27 people -- including 20 children -- are dead following the shooting.
WASHINGTON — The suspect in the Connecticut school shootings is Adam Lanza, 20, the son of a teacher at the school where the shootings occurred, a law enforcement official said Friday. A second law enforcement official says the boy's mother, Nancy Lanza, is presumed dead.
Adam Lanza's older brother, Ryan, 24, of Hoboken, N.J., is being questioned by police, said the first official. Earlier, a law enforcement official mistakenly transposed the brothers' first names.
Both officials spoke on the condition of anonymity because they were not authorized to speak on the record about the developing criminal investigation.
The first official said Adam Lanza is dead from a self-inflicted gunshot wound.
According to the second official, the suspect drove to the scene of the shootings in his mother's car. Three guns were found at the scene – a Glock and a Sig Sauer, both pistols – and a .223-caliber rifle. The rifle was recovered from the back of a car at the school. The two pistols were recovered from inside the school.
The official also said Lanza's girlfriend and another friend are missing in New Jersey.
Meanwhile, former Jersey Journal staff writer Brett Wilshe said he has spoken with Ryan Lanza of Hoboken, who told Wilshe the shooter may have had Ryan Lanza's identification.
Ryan Lanza has a Facebook page that posted updates Friday afternoon that read that "it wasn't me" and "I was at work."
Associated Press writers Adam Goldman in Washington and Samantha Henry in Newark, N.J., contributed to this report.