Police find "good evidence" on motive for Connecticut school massacre

NEWTOWN, Connecticut (Reuters) - Investigators assembled "some very good evidence" to explain what drove a 20-year-old gunman to slaughter 20 children and six adults at an elementary school, police said on Saturday, a day after one of the worst mass shootings in U.S. history shattered a small Connecticut town.

The attacker, identified by law enforcement sources as Adam Lanza, opened fire on Friday morning at Sandy Hook Elementary School in Newtown, which teaches children aged 5 to 10. The shooter killed 26 people - including first-graders, who would be about 6 years old - before turning the gun on himself.