Honolulu police arrested a 12-year-old boy accused of pulling a gun on a 13-year-old girl in Ewa Beach — a troubling sign of guns reaching very young kids on Oahu.

• The boy approached the girl on Fort Weaver Road on a school morning and threatened to shoot her brother.
• The girl reported it at school, and staff found a gun in the boy's backpack before calling police.
• He was arrested on a terroristic threatening charge along with a firearms offense.
• No one was hurt, and the school's quick response kept the situation from escalating.

Outlook: Expect questions about how a 12-year-old got the gun and whether an adult will face charges.