ST. PAUL, Minn. - St. Paul Public Schools say a fight at Central High School Monday was pre-planned by the students involved.

Three people were taken into custody after a fight inside the school led to an 85-minute lockdown. Authorities say an airsoft gun and two knives were found and recovered by officers.

St. Paul police officers investigated the fight after a school resource officer was told one of the students involved flashed a gun. Authorities say the incident started in a bathroom around 10:15 a.m. and spilled out into the hall. A videotape of the incident sent to KARE 11 shows one of the boys involved in the fight getting sucker-punched by a teen he didn't see coming.

St. Paul Public Schools released a statement Monday afternoon saying the weapons were not used during the fight, and were "swiftly confiscated."

According to the release, school leaders said that the two students made plans over the weekend to fight while at school on Monday. "The incident started with a verbal confrontation during an early lunch period and then turned physical," the statement read.

The lockdown was lifted around 11:36 a.m. and school continued as usual, according to the district.

St. Paul Public Schools said in its statement that there are "severe consequences" for students who behave like this. The district "will follow its strict discipline procedures as outlined in the Student Rights and Responsibilities Handbook."