The US Senate rejects four measures restricting gun sales after the massacre in an Orlando nightclub, dealing a bitter setback to advocates who have failed to get even modest gun curbs through Congress despite repeated mass shootings.

An annual gay pride march in Istanbul planned for later this month will not be allowed to take place, the Turkish city's authorities says.

A bartender says the Florida nightclub shooter stalked her nearly a decade ago, sending her so many uncomfortable messages on Facebook that she blocked him on the social network.

US investigators questions the wife of the gunman who killed 49 people at a gay nightclub in Orlando, the FBI say, and a law enforcement source says she could face criminal charges if there is evidence of any wrongdoing.

Here are a few excerpts from the survivors of the Orlando shooting who share their nightmarish experience as Omar Mateen shot 50 people dead, in what is said to be the worst mass shooting in US history.

Reports that Orlando gunman Omar Mateen had been a regular at the gay nightclub he attacked and used gay dating apps have led to speculation that he was motivated by internalised homophobia. But what is it, and could it have anything to do with the worst shooting in recent US history?

Republican Donald Trump says he will like people on terror watch lists to be prevented from buying guns, in the wake of the Orlando shootings.

Jamaica's attorney general has sparked criticism after saying it was "disrespectful" to Jamaican law for the US embassy to fly a rainbow flag following the Orlando shooting.

Wife of gunman who killed 49 people at an Orlando gay nightclub knew of his plans for the attack and could soon be charged in connection with the deadliest mass shooting in modern US history, a law enforcement source said on Tuesday.

The gunman who attacked a Florida LGBT nightclub had visited the club at least a dozen times before carrying out his attack, witnesses said.

JK Rowling is mourning one of the victims of the Orlando shooting after it emerged he worked on a Harry Potter ride at Universal Studios theme park.

Vigils have been held in Orlando, Florida, and around the world for the victims of Sunday's deadly gun attack on a gay nightclub.

The victims of the Pulse nightclub shooting in Orlando, Florida, are being identified by the US authorities and their names released once their families have been told. So far, 36 of the 49 killed have been named: 32 men and four women aged between 19 and 50.

Quite a few hours have gone by since Mina Justice last heard from her 30-year-old son, Eddie, who was inside the Orlando nightclub when bullets rang out early this morning.

Prime Minister Sheikh Hasina strongly condemns and expresses deep shock at the death of 50 people in a terrorist attack on a nightclub in the USA.

A gunman who killed dozens of people in a gay nightclub in Orlando, Florida, has been identified as Omar Mateen, a US citizen who had been known to the FBI since 2013.