Spring Valley High School was locked down this morning as authorities investigated a report that a juvenile walked into the school with a gun, Metro Police said.
According to multiple media reports, the lockdown was lifted after police found no weapon.
Metro and Clark County School District Police investigated the validity of the call, which came in about 8:20 a.m., officials said.
The school, with more than 2,200 students, is located in the 3700 block of Buffalo Drive, south of Twain Avenue.