Omar Mateen killed at least 50 people at the Pulse gay dance club Orlando.
He was born in the USA in 1986 to parents from Afghanistan who lived in Port St. Lucie, FL, who law enforcement has characterized as having sympathy for, or ties to Islamic terrorism.
On Sunday following the mass shooting his father Seddique Mateen said "We are apologising for the whole incident. We are in shock, like the whole country."
Also in a statement posted online and addressed to people in his native Afghanistan, Seddique Mateen said his son was "a very good boy", who had a wife and a child.
However various publications are now reporting that Omar Mateen was not such a "good boy."
The Guardian reports "Sitora Yusifiy divorced the shooting suspect after four months of marriage and says he had serious mental health problems."
She was married to Mateen for just four months in 2009 and it was a tough four months.
She paints a picture of a mentally disturbed individual and a physically abusive husband.
“In the beginning he was a normal being that cared about family, loved to joke, loved to have fun,” Yusifiy said of Mateen, whom she had met online.
Sitora Yusifiy adds Omar Mateen was quick tempered, regularly getting into fights and arguments with his parents and others, owned a pistol and had a history of using steroids.
That was six or seven years ago.
So the big question now will be how come such a man was able to buy a .233-caliber AR-15-type assault rifle and a 9mm in Florida in the last week?
"A Florida government website confirms that he had been issued a license to work as an armed security officer."
Surely a .233-caliber AR-15-type assault rifle should not be available to Joe Public or would be security officers?
Remember the killing of Trayvon Martin also in Florida?
Other unanswered questions include why FBI investigations into allegations against Mateen failed. According to the Mail Online Mateen "had been the subject of two FBI investigations that had him on a 'watch list' and had been linked to suicide bomber Moner Abu Salha."
He was ruled out as a terror threat.
Mateen targeted the gay community last weekend. He used weapons bought during the last week. Whatever the reason he brought terror to the gay community.
Pulse Orlando death toll 50 with 53 inured