The Islamic State militant group is claiming responsibility for Sunday's attack outside a building near Dallas, Texas, where an exhibition of cartoons depicting Islam's Prophet Muhammad was taking place.
IS Claims Responsibility in Texas Shooting

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This photo shows an aerial view of the car that was used the previous night by two gunmen who were killed by police. The case is being investigated by the local police and the FBI, Garland, Texas May 4, 2015.

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The bodies of two gunmen are moved away from a car during an investigation by the FBI and local police in Garland, Texas May 4, 2015.

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Muslim community leader Khalid Hamideh (right) and Ali Salem, Executive Director of Council on American-Islamic Relations, condemned the two gunmen who attempted an attack during an exhibit of cartoons representing the Muslim Prophet Muhammad, Garland, Texas, May 4, 2015.