The clips were captured on Saturday and show a man walking on sidewalks near the Brown campus after the shooting.

A typical Saturday night on the Ivy League campus was shaken by the killing of two people and the wounding of 9 others.

A suspect was in custody Sunday, the day after two people were killed and nine others injured during an attack on the Rhode Island campus.

The university sent an alert late Saturday afternoon warning students to hide. A suspect was not in custody, university officials said, correcting an earlier posting.

More than a year before the Trump administration granted asylum to the Afghan immigrant, the volunteer’s emails raised concerns that he was unraveling.

The units were backed by the C.I.A. and trained to conduct missions in Afghanistan during the U.S. war in the country.