The White House doubled down on President Obama’s decision to express concerns about the easy access to guns in the United States in the wake of Thursday night’s sniper attack in Dallas that took the lives of five police officers and wounded at least seven others.

“Our thoughts first and foremost are with the families [of the victims],” White House press secretary Josh Earnest told reporters Friday afternoon during a briefing in Poland. “But the president’s views about the impacts of the easy availability of guns has on our community is a significant source of concern for him.”