(Hartford Courant) After killing his mother in her Newtown home, 20-year-old Adam Lanza drove her car to Sandy Hook Elementary, where officials said she taught, and gunned down 20 children and six adults before killing himself.

Most of the dead were found in two first-grade classrooms, police said.

State police sources told The Courant that Lanza had his brother Ryan Lanza’s identification, which initially led to confusion about his identity, police said. He was dressed in black fatigues, police said.

His motives are unknown.

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