A shooting at a suburban Phoenix high school that killed two 15-year-old girls and caused panic among parents was a murder-suicide, police said.
Police announced that a suicide note was found at the scene of the shooting Friday morning near the cafeteria area of Independence High School in Glendale. They said the girls each were shot once, were declared dead at the scene and a weapon was found near the bodies.
"Information gathered by detectives reveal the two girls were very close friends, appeared to also be in a relationship," Glendale police spokeswoman Tracey Breeden said in a statement Friday afternoon.
It is believed nobody witnessed the shooting, Breeden said.
Both teens have been identified, but Breeden said "their names will not be confirmed or released at this time by the police department due to their juvenile status."
Hours before the lockdown of the school was lifted, hundreds of worried parents crowded the parking lots of nearby discount and convenience stores.
One woman gnawed on her fingernails as she spoke on a mobile phone, while another had tears streaming down her face. Other parents chain-smoked as they waited for news.
Cheryl Rice said she went to a store after a friend called about the shooting and asked about Rice's 15-year-old daughter. But the girl called to say she was safe as Rice arrived at the store.
The Glendale Union High School District alerted parents to the shooting through emails and automatic phone calls and released information on social media, Superintendent Brian Capistran said.
Students typically are not allowed to use their mobile phones during lockdowns, but as calls from parents flooded the district, officials asked teachers to have students call family, Capistran said.
* For support and information about suicide prevention, call Lifeline on 13 11 14 or Suicide Call Back Service 1300 659 467.