President Donald Trump had a strong message for the Islamic State on Friday, just two days after the truck attack in New York City, declaring that when terrorists hit America, “we are hitting them ten times harder.”

The president took questions as he was leaving for his trip to Asia, and one reporter asked what the “military is doing that is different” following Tuesday’s terror attack. The attack in New York City killed eight people and injured eleven, and ISIS has claimed the accused attacker to be a “soldier of the caliphate.”

“What we’re doing is every time we’re attacked from this point forward, and it took place yesterday, we are hitting them ten times harder,” Trump said. “So when we have an animal do an attack like he did the other day on the West Side of Manhattan, we are hitting them ten times harder.”

After the suspect was shot in the gut and taken into custody, authorities found a note in which he declares allegiance to the Islamic State. While in the hospital recovering from a bullet wound, the suspect requested an ISIS flag be displayed. That request was denied.