Tuan Makavan and his parents, the father of the man identified by authorities as a person of interest at the crime scene, and his wife, who was with him when the shooting occurred. In a news conference in Orlando this morning, police said Tuan Makavan’s family members had been briefed.

It was not clear whether Makavan’s family would be able to come into the United States at this time.

The Associated Press quoted an unidentified FBI official as saying that the shooting may have been accidental.

Tuan Makavan and his son moved to Orlando from Georgia in a large trailer for an apartment complex in 2014. His wife also called 911 during the shooting, but the caller was not identified. The couple had two children, a daughter from a previous relationship in Georgia and a son from a previous marriage in Arizona, police said.

Omar Mateen lived in Port St. Lucie, Florida, and was known to the local business community, said local attorney Bill Moore. Police said that he had moved to Florida to be with his wife after breaking up with his previous wife last year, then moved back to the Port St. Lucie area.

Moore said Tuan Makavan and Tuan Mateen were close, having attended various meetings of the Knights of Columbus in Port St. Lucie, according to a biography on the organization’s website. Moore said the group was established by John Paul Kukkake, a retired New York Army National Guard officer and longtime anti-bullying activist.

Moore said he first met Mateen when the sheriff met the man’s father, who told him that his 16-year-old son had recently moved to Port St. Lucie.

Mateen was also active in local political forums, visiting an event that featured President Barack Obama last year at a synagogue in Port St. Lucie, said Moore.

Mateen was an ardent conservative who espoused hardline views on immigration and gay marriage and believed in Islam, Moore said.

A longtime gay-rights activist in Orlando, Moore said that Mateen was a staunch supporter of Donald Trump’s candidacy.

Mateen’s father has told the Orlando Sentinel that his son “could go up and shoot anybody in the room that is going to try to stop him.”

On Wednesday, in his first public comments on the shooting, Mateen said that his son was carrying a pistol and was