The world was rocked Sunday morning after hearing about the worst mass shooting in American history. Fifty people were killed at the gay nightclub "Pulse" in Orlando, Florida, as new information has started to come out about the man responsible.

Controversial history

It was 29-year-old Omar Mateen who walked into "Pulse" late Saturday night, before unloading with an AR-15 and a hand gun. The results of his horrific action resulted in the deaths of 50 civilians, while leaving at least 53 others injured.

In the last 24 hours, it's been reported that Mateen had dialed 911 nearly 20 minutes into his attack, pledging allegiance to the Islamic State (ISIS). Further information suggests deeper issues for Mateen, whose father has been accused of running an anti-American, pro-Taliban YouTube channel. According to Mediaite on June 13, Mateen's hatred for the LGBT community might have been a cover for more personal problems.

Citing The Daily Beast, former friend of Mateen, Samuel King, has opened a door into the private life of the Orlando shooter.

King, who is openly gay, claims that Mateen would, "regularly pick up lunch from a drag queen at Ruby Tuesday." King went on to say that he was stunned by the News, describing Mateen as a "jokester" who "didn't have an issue with the LGBT community." King even said that he believed Mateen had actually gone to drag shows in the past. "That’s the thing that’s pinning me to the wall the most, that it was a gay nightclub,” King went on to say, continuing, "Because he would come into the (the restaurant) and laugh with us.”

King's account of Mateen does appear to conflict with previous reports of the shooter.

Mateen's ex-wife has accused him of abuse during their marriage, with co-workers saying that he developed "unhinged" behavior, but the company never acted out of fear of being accused of profiling due to the fact he was Muslim. An additional report in The Washington Post quotes former classmates who say Mateen acted differently following the terrorist attacks on 9/11. The classmates were quoted as saying he "started jumping up-and-down cheering on the terrorist," in regards to the 9/11 attacks, saying "something changed" about it.

Mateen was killed during a shootout with police duringSunday morning'sattack, which has resulted in an entire nation mourning the lost lives of 50 innocent victims and their families as a result of another act of terrorism.

Don't miss our page on Facebook!