Students wrapped up classwork and prepared for finals as the UCLA campus tried to regain a sense of normalcy a day after being rocked by a murder-suicide that prompted a lockdown and an enormous police response.

The engineering department, the site of the shooting, remained closed Thursday but the rest of the school buzzed with activity.

Sophomore Gus Lee says he was shaken by Wednesday's killing of professor William Klug by a former student. He plans to attend an evening vigil for Klug.

Dr. Brennan Spiegel says he addressed the tragedy at the start of his public health class. He told his students that the university has an obligation to continue its mission of teaching and learning.