A 911 call about a student having a gun inside a Gresham-area school Thursday was a hoax, an official said.

Someone placed the call from an unidentifiable number and stated they had seen a student with a gun inside Sam Barlow High School, said Lt. Chad Gaidos, a Multnomah County Sheriff's Office spokesman. The caller provided a suspect description, Gaidos said, and deputies, Gresham police and school district employees searched for a student matching that description.

Deputies located, detained and interviewed the student, Gaidos said. They don't think there's a connection between the student and 911 call.

Deputies interviewed two other students in addition to the person of interest, Gaidos

Gaidos said there's no immediate threat to the school, which has been taken off a lockdown put in place Thursday morning. Deputies don't know who placed the 911 call, he said.

"This is not a joking matter. We don't train for these as if they are," Gaidos said, noting that deputies are going to respond to such reports as if they're real every time.

About 1,700 students in ninth through 12th grades attend the school, Gresham-Barlow School District spokeswoman Athena Vadnais said.

"Deputies will forward information to detectives for a follow up investigation," Gaidos said in a news release.

-- The Oregonian/OregonLive