icted by that awful day,  she said.

School reopened in the district Wednesday for the first time since the shooting. Dozens of officers were on hand at each school to welcome children back, the Bend Police Department said.

In a social media post, the department said it continues investigating the attack, including serving search warrants at the attacker's home, as well as on his electronic devices and his social media accounts on a variety of platforms.

The statement said police have confirmed that the pump-action shotgun used in the attack had been legally purchased. The Associated Press previously reported it had been purchased by the suspect's mother, according to a law enforcement source who was not authorized to discuss the investigation. But investigators said they were still looking into how the boy obtained it.