A student at West Harrison High School has been arrested after he was found to have a firearm, ammo and three "edged weapons," the school's Facebook post says.
The school reported the incident on its Facebook page about 2:45 p.m. Tuesday.
Students reported the student to administrators, the school said on its Facebook post.
"This afternoon, a student was immediately arrested after it was reported and discovered that he had a firearm, five rounds of ammunition and 3 edged weapons," the Facebook post said. "All students and staff are safe and were never threatened."
The school said administrators and school resource officers are working with the Harrison County Sheriff's Department and other agencies. What other agencies are involved wasn't clear.
The school district policy about weapons on campus are being followed, the school said. That appears to mean the student will be expelled.
Details were not immediately available.
The school commended the students who reported the situation to administrators.
"We urge parents to have a conversation with their children about the importance of reporting anything suspicious, and remind them to never take any weapons to school," the school said.
The rural school is on County Farm Road near Gulfport.
The arrest came four days after a deadly shooting by a student at Santa Fe High School in Galveston County Texas. Ten were killed and 13 were wounded, the Los Angeles Times reports.
Dimitrios Pagourtzis, 17, a junior at Santa Fe High, faces charges of capital murder and aggravated assault against a public servant. He was taken before a judge for formal charging on Monday.
SunHerald.com will update this report when new information is available.
UPDATED (May 22, 2018): The Harrison County Sheriff's Department said in a press release that students reported the unidentified 16-year-old had a handgun in his waistband. A school resource officer later pulled the teen out of class at the end of the school day and found he had a small caliber handgun in his waistband as well as two throwing stars and two knives in his backpack, Peterson said.
The teen now faces a felony count of possession of a weapon on school property and four misdemeanor counts of possession of a weapon on school property, Peterson said. He's being held without bond at the Harrison County Juvenile Detention Center, pending a Family Court Detention Hearing.
"There's no reason to believe the teen intended to harm anyone," Peterson told the Sun Herald. "The school resource officers said they talk to him nearly every day, he was personable and a good student, so why he brought he brought the weapons to school is not clear."