No casualties or major damage were immediately reported, but shaking sent people fleeing homes and businesses across the region and the Caribbean.
Three months after the Supreme Court overturned a law prohibiting states from legalizing sports betting, a few states have begun accepting wagers.
The announcements add to a steady drumbeat of efforts by U.S. tech companies to detect and stop hacking attempts by suspected foreign agents.
Tibbetts, 20, vanished on July 18 after an evening run.
Hunter, who represents communities in San Diego and Riverside counties, was the second member of Congress to officially endorse Trump.