AUSTIN -- University of Texas students returned to class from spring break hours after a fourth bombing incident in Austin.

The University released a safety warning Monday: 

“Students should not handle suspicious packages and stay far away from anything suspicious. If you see something that looks out of place, report it. If you carry backpacks or bags keep them close by. Remain alert and stay up to date on the University's social media pages.”

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Continuing coverage: 

Map of bombings: