AP source: Suspect is 24; younger brother held

Associated Press
Mourners grieve at one of the makeshift memorials for victims of the Sandy Hook Elementary School shooting, Sunday, Dec. 16, 2012, in Newtown, Conn. On Friday, a gunman allegedly killed his mother at their home and then opened fire inside the school, killing 26 people, including 20 children. (AP Photo/Mary Altaffer)
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Mourners grieve at one of the makeshift memorials for victims of the Sandy Hook Elementary School shooting, Sunday, Dec. 16, 2012, in Newtown, Conn. On Friday, a gunman allegedly killed his mother at their home and then opened fire inside the school, killing 26 people, including 20 children. (AP Photo/Mary Altaffer)

WASHINGTON (AP) —

A law enforcement official says the suspect in the Connecticut school shootings is 24-year-old Ryan Lanza and that his younger brother is being held for questioning as a possible second shooter. The law enforcement official says the boys' mother, Nancy Lanza, works at the school as a teacher.

The official also said Ryan Lanza's girlfriend and another friend are missing in New Jersey.

Speaking on condition of anonymity, the official said the suspect is dead from a self-inflicted gunshot wound.

The official spoke on the condition of anonymity because the source was not authorized to speak on the record about the developing criminal investigation.

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