Student seriously injured, another student in custody following stabbing at Lansdowne High School

BALTIMORE -- A 15-year-old student was injured and another student was taken into custody from a stabbing Tuesday afternoon at Lansdowne High School in Baltimore County, according to authorities.

Lansdowne High School sent a letter to parents saying the school was placed on "lockdown protocol" at 12:40 p.m. because of an assault involving two students.

The lockdown was lifted at 1:15 p.m. and transitioned to fourth period.

Baltimore County police said a female student was taken to the hospital with serious injuries from a stabbing, while another female student was taken into police custody.

"All students and staff are safe," Lansdowne High School Principal Allison Seymour said in a letter to parents.

Baltimore County Police spokesperson Joy Stewart said the school resource officer was notified of an assault at the school.

The SRO's supervisor was also at the school during the attack.

Both took the suspect into custody and rendered aid to the victim.

School officials said there will be an increased police presence on campus throughout the day.

"I'm very concerned because it's just getting out of hand," said Keith Queen, a grandparent of a student.

All afterschool activities on Tuesday have been canceled.

Baltimore County Executive Johnny Olszewski reacted to the stabbing.

"It's heartbreaking to see one of our young people injured in a violent and senseless attack," Olszewski said. "We are praying for a full and speedy recovery to the injured student and we applaud the school resource officer on site for their efforts to quickly apprehend the suspect. We expect the suspect in this incident to be held fully accountable for this outrageous and unacceptable behavior."

We are working to learn more about this developing story.