Police shot dead two suspected Islamist extremists who opened fire outside an exhibition of cartoons of the Prophet Mohammed Sunday.
A security guard was shot in the ankle, treated at a hospital and released.
The White House said President Barack Obama had been briefed on the attack, and praised the bravery of first responders.
“There is no form of expression that justifies an act of violence,” said White House spokesman Josh Earnest.
Police said two men drove up to the conference center in Garland, Texas and jumped out and opened fire on a security guard. – AFP