UPDATE: 12:43 a.m. EST — Two 15-year-old, sophomore girls died Friday morning at Independence High School in Glendale, Arizona, police spokeswoman Tracey Breeden said in a news conference that afternoon. The 911 call came in right before 8 a.m. local time, and officers responded within two minutes.

Detectives are investigating the incident but are not looking for any suspects. "The two young women were found next to each other. There was a weapon found beside them," Breeden said, adding that both victims had a single gunshot wound. "We don't have any persons of interest at this time."

Parents will be allowed to pick up their children from school soon.

UPDATE: 12:27 a.m. EST — Independence High School was still on lockdown Friday morning after a double shooting on campus in Glendale, Arizona, as parents waited for a police conference.

UPDATE: 11:59 a.m. EST — Arizona's Glendale Union High School District posted a statement about a double shooting there Friday morning:

Independence High School was put on lock down this morning due to a police investigation. Police have secured the campus. There is no active shooter on campus. The investigation is ongoing.

The campus remains on lock down and no one will be allowed to enter or exit the campus until the police have lifted the lock down and ensured the safety of the school.

Parents will be notified as soon as it is safe for students to be picked up from campus.

Police were scheduled to give an update at noon EST. As parents waited for information, the state's nonprofit Crisis Network tweeted that it had opened its tragedy support line.

UPDATE: 11:30 a.m. EST — Social media posts with unconfirmed information continued to roll in Friday morning about a confirmed double shooting at Independence High School in Glendale, Arizona. Parents were being asked to gather at a local Walmart while police prepared to deliver an update at about noon EST.

"Your children are safe, and this is not a dangerous situation," Officer Tracey Breeden, the Glendale police spokeswoman, told KPHO.

UPDATE: 11:15 a.m. EST — As Independence High School in Glendale, Arizona, remained on lockdown after a confirmed double shooting there Friday morning, the local police provided a statement to BuzzFeed News insisting nobody was in danger.

Other media outlets reported from the scene:

UPDATE: 11:08 a.m. EST — Jerry Weiers, the mayor of Glendale, Arizona, tweeted Friday morning that he sympathized with the students and families at Independence High School there after a double shooting. The school itself remained on lockdown.

The governor of Arizona, Doug Ducey, tweeted shortly thereafter:

ABC 15 was reporting one person had died, but there was no official confirmation yet. As the situation developed Friday, the hashtag #patriotpride began to take off:

UPDATE: 10:57 a.m. EST — Glendale police officers told ABC 15 Friday morning that they were not looking for a suspect after confirming a double shooting at Independence High School there.

Glendale's police department worked with an FBI SWAT team last May to practice what their response would be to a school shooting. The simulation included armored trucks and helicopters and took 12 hours, according to KPHO.

UPDATE: 10:53 a.m. EST — Javier Soto, a reporter for Good Morning Arizona, tweeted Friday morning that there was no active shooter at Independence High School in Glendale after news of a double shooting broke online. ABC 15, citing anonymous sources, reported that one person had died.

At least one person on the school's alumni Facebook page wrote that the incident was a suicide, but nothing had been confirmed.

UPDATE: 10:41 a.m. EST — Parents were flocking to Independence High School in Glendale, Arizona, Friday morning after reports of a double shooting were shared online, KPHO reported. The local police reportedly confirmed the incident but hadn't yet posted on their verified Twitter account.

Glendale was the location of a 2000 incident in which an armed 14-year-old, Sean Wayne Botkin, held a classroom of students hostage at his old elementary school. He ultimately surrendered and did not injure anyone, according to the Associated Press.

UPDATE: 10:30 a.m. EST — A reporter for ABC 15 posted on Twitter Friday morning that one person was "confirmed dead" after an alleged shooting at Independence High School in Glendale, Arizona.

Watch a live stream from the TV station here.

Original story:

Police in Glendale, Arizona, told news outlets Friday morning they were investigating a shooting at Independence High School, according to ABC 15. Two people were reportedly shot.

The Arizona Republic reported that fire trucks and police cars were responding to the campus as of about 8:20 a.m. MST. 

Reporters were also posting about the incident on Twitter.

Independence High School has about 2,000 students and 90 teachers, according to U.S. News and World Report.

This is a breaking news story. Check back for updates.