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(CNN) - The preteen shooter who opened fire inside a crowded middle school gym with a shotgun may have warned some students not to go to school before the attack, police in New Mexico said.
The revelation is part of the many angles police are looking into after Tuesday's shooting that left two students wounded, a New Mexico community stunned and a nation again wondering about the safety of its schoolchildren.
"We have preliminary information that possibly some of the students were warned by the individual prior to the shooting not to go to school," said New Mexico State Police Chief Pete Kassetas during a news conference Tuesday night.