A janitor at an elementary school near Sacramento, California, was arrested on Wednesday after he shot and wounded the school's principal, a county fire department official said.
The shooting occurred at about 10:30 a.m. local time in an office at the Schnell School in the Sierra foothills town of Placerville, about 20 miles northeast of the state capital.
The gunman fled the scene on foot to his home, where he was taken into custody by law enforcement authorities, according to El Dorado County Fire Department Battalion Chief Larry Marinas.
The victim, identified as the school's principal, was taken to a nearby hospital, but Marinas said he had no information about the nature of his injuries, his condition or how many times he was shot.
Officials at the hospital, the Marshall Medical Center in Placerville, gave no details, but the Sacramento Bee newspaper reported the victim as listed in serious condition. Police and sheriff's deputies were not immediately available to comment.
No one else was hurt or threatened with violence in the incident, Marinas said, but the shooting prompted a security lockdown at the school that lasted for at least two hours.
The circumstances and motive for the shooting remained unclear, he added.
An online notice posted on the Placerville Union School District website said only that at shooting had occurred at the Schnell School campus and that all students were safe and under a classroom lockdown.