Marysville-Pilchuck High School is under lockdown as authorities respond to shooting at the school in Marysville, Washington. Police believe only one gunman was involved and is dead.

"We are confident that there was only one shooter and that the shooter is dead," said Marysville Police Commander Robb Lamoureaux to The Seattle Times.�Police say the gunman was killed when he turned the gun on himself after opening fire on campus.

The shooting began at approximately 10:45 a.m. local time close to the cafeteria and local television stations are reporting that two people were being airlifted to a local hospital. However, police have not confirmed any injuries or identities of those wounded in the incident.

Students at the school are being relocated to the Shoultes Community Church, and buses will take the students home from there, according to a notice posted on the school district's website. Parents in the area wanting to pick up their children are being asked to go to the church location on 116th and 51st streets to sign their children out with school administrators or law enforcement.

Ayn Dietrich, an FBI spokesperson in Seattle, said FBI personnel were on their way to Marysville to assist with the investigation into the incident, KOIN 6 reports, citing the Associated Press.

The high school is part of the Marysville School District north of Seattle in Snohomish County with more than 11,000 students in 11 elementary schools, four middle schools, and eight high schools. The county is the third most populous in Washington.

This is a developing story and Security Management will continue to update this post as more information becomes available. For more recent information, read ourUpdate.