Loch Raven High School was put on lockdown Thursday after police received a report of an armed person.
Lake Nona High School assistant principal Adele Salazar said in a message to the campus community that another student saw the boy on the bus with what appeared to be a gun and alerted staff. Police say the student will remain in custody pending charges.
When the student was located, officers found a black CO2 BB gun, 24 CO2 cylinders, ammunition and a pocket knife, according to a news release.
Roller said Talladega police were called, and the student was taken into custody.
Officers searched the student - whose identity hasn't been released - and found a BB gun with Carbon dioxide cylinders, pellets and a pocket knife. "Please know that counselors are available for any student who may need to talk to someone", Salazar said.
The school was placed on lockdown and no other weapons weapons were found following an extensive search of the school by investigators and officers. No injuries were reported in the incident, Baltimore County police officials confirmed on an official Twitter account. The situation was resolved in about 45 minutes and the lockdown was lifted a short time later, police said.
UPDATE - The staging area for parents has been moved to 1125 Cromwell Bridge Road, in the parking lot of The Big Screen Store.