Mateen used a friend to cover up his secret sex life and met women using dating websites like Plenty of Fish to cheat on his wife.
Research finds that important Islamic holidays witness systematic declines in violence—as much as 41 percent.
The legislation would prohibit Americans convicted of misdemeanor hate crimes from obtaining guns.
Omar Mateen killed 49 people at Orlando's Pulse nightclub in June 2016.
The Florida gunman had pledged allegiance to the militant group before he killed 49 Orlando clubgoers.
Certain features in the "typical mass shooter" have been identified but more investigation is needed.
A group of senators still aims to keep firearms away from people on extremist watch lists.
Omar Mateen called emergency dispatchers three times and posted internet messages from inside the Pulse nightclub.
President urges Congress to pass legislation to restrict access to semi-automatic weapons.
Trump first called for surveillance of mosques in November, as well as a database of Syrian refugees entering the U.S.
The Orlando attack was the deadliest mass shooting in modern U.S. history and the worst assault in America on the LGBT community.
A local broadcaster said the message was posted in the men-seeking-men section of Craigslist in San Diego.
After the worst mass shooting in U.S history, McConnell said he was open to suggestions from experts on legislation that could address the problem.
She could soon be charged in connection with the deadliest mass shooting in modern U.S. history.
Director of London Pride calls on the capital's LGBT community to "let them see us dance and sing" despite Orlando attack.
London showed that no matter what background or faith, people can unite against hate.
Regulars at Pulse nightclub say Omar Mateen would get so drunk he would become loud and belligerent.
Trump's renewed call for a ban on some Muslims entering the country showed few signs of winning over Republican foreign-policy figures.
Social media tributes to the victims of the deadliest mass shooting in U.S. history are heartbreaking.
Omar Mateen killed 50 people and wounded 53 more when he opened fire at a gay nightclub.
Syed Shafeeq Rahman, a physician by profession, said he had known the gunman since he was an unruly child.