Two people were shot at a high school in Glendale, Arizona, police said on Friday, adding that the school and its surrounding neighborhood were now "safe."
Local media reported that one person had died in the incident, at Independence High School, which was on lockdown, according to police and school officials.
The police officer who said two had been shot at the school declined to provide further details and a spokeswoman for the police department in the Phoenix suburb could not immediately be reached for comment.
Phoenix television station ABC15 said at least one person had died in the shooting, citing unnamed sources. Police could not confirm any deaths, the station said, but a police spokeswoman told the news outlet two teenagers were involved.
Concerned parents gathered outside the school, looking for their children, and a section of the street on which the school is located was closed, Phoenix television station KPHO reported.
It was not immediately clear if a shooter was in custody or was one of those shot.
The Glendale Union High School District confirmed the school was on lockdown, but declined to release more details.