Presumptive Republican nominee Donald Trump reacted early this morning to the news of the mass shooting at a club in Orlando, Florida.

“Really bad shooting in Orlando,” he wrote at 8:07 a.m. “Police investigating possible terrorism. Many people dead and wounded.”

Really bad shooting in Orlando. Police investigating possible terrorism. Many people dead and wounded. — Donald J. Trump (@realDonaldTrump) June 12, 2016

Later Trump updated his response, calling for renewed vigilance against

terrorism.

“Horrific incident in FL. Praying for all the victims & their families,”

he wrote. “When will this stop? When will we get tough, smart & vigilant?”

Horrific incident in FL. Praying for all the victims & their families. When will this stop? When will we get tough, smart & vigilant? — Donald J. Trump (@realDonaldTrump) June 12, 2016

Later, Trump reacted to fans congratulating him for being among the first to identify the attack as a product of radical Islamic terrorism.

“Appreciate the congrats for being right on radical Islamic terrorism,” he wrote. “I don’t want congrats, I want toughness & vigilance. We must be smart!”

Appreciate the congrats for being right on radical Islamic terrorism, I don't want congrats, I want toughness & vigilance. We must be smart! — Donald J. Trump (@realDonaldTrump) June 12, 2016

Hillary Clinton also reacted to the news on Twitter at 9:20 a.m.

“Woke up to hear the devastating news from FL,” she wrote. “As we wait for more information, my thoughts are with those affected by this horrific act.”