Bryan Lindstrom’s students were missing when the first-period bell rang at Aurora’s Hinkley High School on Jan. 30. One slipped in minutes later, followed by another. But the 12 other students in his African American history course never appeared that morning.

Heavily armed federal agents raided apartment buildings across metro Denver early Wednesday in a search for Venezuelan gang members and other migrants.

The DEA posted a video of agents raiding an apartment with a smoke grenade and an unknown number of residents were boarded onto a bus