The mass shootings that left at least 20 dead at an Orlando, Fla., nightclub sparked sorrow and outrage across the country as the word spread Sunday morning.

Entertainment and media figures, including presidential hopefuls Hillary Clinton and Donald Trump, took to social media to express their thoughts about the crime at the Pulse club, which catered to the LGBTQ community. Local officials described the shootings, carried out by a single heavily armed man, as an act of domestic terrorism.

The shootings come hours before CBS’ live telecast tonight of the 70th annual Tony Awards. A source said producers were scrambling Sunday morning to find a way for the telecast to address the slayings in Orlando.