At approximately 2:00 a.m. on June 12, 2016, Mateen entered the Pulse nightclub in Orlando, Florida, and began shooting. At 2:22 a.m., he made a 9-1-1 call in which he pledged allegiance to ISIL; referenced Tamerlan and Dzhokhar Tsarnaev, the Boston Marathon bombers; and mentioned Moner Mohammad Abu Salha, an acquaintance of his who died in a suicide bombing in Syria for the Al-Nusra Front in 2014. According to FBI officials, Mateen made two other 9-1-1 calls during the shooting. He also called News 13 of Orlando and identified himself as the nightclub shooter; "The Washington Post" reported that "he had carried out the Pulse attack for the Islamic State."