Orlando gunman supported conflicting Islamic groups

FBI Director James Comey says Omar Mateen, the shooter that killed 50 people at Pulse gay club in Orlando, Florida, espoused support for a jumble of often-conflicting Islamic organizations.

Comey said that shooter called 911 during the attack and not only pledged loyalty to the Islamic State but also expressed solidarity with the Tsarnaev brothers who carried out the Boston Marathon bombing and a suicide bomber who died on behalf of the al-Nusra front, a group at odds with the Islamic State.

Comey says in the past few years, the gunman also expressed support for both al-Qaeda and its enemy Hezbollah.

The FBI investigated Mateen for 10 months beginning in May 2013 after he was said to have inflammatory remarks in support of terrorists.

Comey said investigators introduced him to confidential sources, followed him and reviewed some of his communications, but Mateen claimed he made the remarks in anger because co-workers were teasing and discriminating against him because he was Muslim.

As for whether the FBI should have done anything differently, Comey says so far he doesn't think so.

Also, court documents revealed new details about Mateen's life.

The documents are in relation to Omar Mateen's petition to legally change his name in 2006, the same year he graduated from Indian River Community College. The records show that he changed his name from Omar Mir Seddique to Omar Mir Seddique Mateen, though they don't say why he changed his name.

Mateen was born in Queens, New York, and moved to Port Saint Lucie in 1991. Between 2001 and 2006, he worked at eight jobs, including a Publix grocery store, Circuit City, Chick-Fil-A and a Walgreens drug store. Then his jobs begin focusing more on vitamins and health. He worked at Nutrition World in Fort Pierce, Gold's Gym and a GNC store in a mall.