A 15-year-old boy is in critical condition after being shot at Omaha Northwest High School in Nebraska. The incident, reported around 12:23 p.m. on Tuesday, was an isolated altercation between two students. The suspect, a fellow student, was apprehended approximately 35 minutes later. The school went into lockdown, which was lifted after the suspect's arrest. Students were moved to a football stadium for reunification with their families, a process that police said would take time. The Omaha Police Department emphasized that there is no ongoing threat to the community as the investigation continues.