The alleged shooter in today's tragic Connecticut school shooting was identified by NBC News as Ryan Lanza, 24, who reportedly also killed his father in Hoboken, N.J.
However, reports now conflict as to whether this is truly the case; several sources believe his brother, 20-year-old Adam Lanza, was actually the shooter.
WNBC says Lanza then drove to Sandy Hook Elementary School in Newtown, Conn., an hour east of N.Y. City, where his mother was the kindergarten teacher.
There, Lanza was said to have been responsible for the Connecticut school shooting that claimed 26 lives - 18 of them children - before he killed himself.
The gunman opened fire after wanting through the front office, then walked to his mother's classroom and opened fire, killing her and other students.
Lt. Paul Vance of the Connecticut State Police would not confirm the shooter's identity, only saying that "the shooter is deceased inside the building."
Vance said the incident began after a 911 call from the school to Newtown Police at 9:41 a.m.
The police immediately called State police and other local law enforcement for mutual aid.
Vance said that when his officers arrived at the school, they made "immediate entry."
Vance would not give specific numbers on how many children and how many staff are dead and walked away when asked if that was the only shooter.
There are reports that there is a person in custody but that has not been confirmed; Vance said there would be another press conference shortly.
CNN first identified the killer as Ryan Lanza, but the New York Post claims Adam Lanza was responsible and that Ryan is being questioned by police, but not a suspect.
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