Hillary Clinton canceled her first campaign event of the election cycle with Vice President Joe Biden, due to the shootings in Dallas on Thursday night, during which snipers shot 12 officers, leaving five dead.

“Due to the tragic events in Dallas, the July 8 Hillary for America campaign event with Vice President Biden will be postponed,” the Clinton campaign wrote in a statement Friday morning. “Details on rescheduling the event will be provided as soon as possible.”