Police said Sunday that a person of interest is in custody following a deadly shooting at Brown University that killed at least two people and injured nine.

Surveillance video released by police shows the suspect, dressed in black, calmly walking away from the scene.

“It’s honestly laughable,” Zoe Weissman—who was just 12 when she witnessed the 2018 killings at a school in Parkland, Florida, and who on Saturday survived yet another shooting that left two dead and ...