IS militants have issued an online warning saying that the terrorist group has many "trained soldiers" positioned in 15 states and are ready to conduct operations.
According to Fox News, the terror group named five of the states Virginia, Maryland, Illinois, California, and Michigan, where their terror cells are in place.
IS militants also claimed responsibility for the attack in Texas outside the "Draw the Prophet" Muhammad content in Garland.
IS also warned that they will carry out more attacks on the US soil in the next six months.
The jihadist group also named the anti-Islamist head of the American Freedom Defense Initiative, Pamela Geller, who organized the contest in Texas.