Morning top 5: Orlando massacre, terror condemned and David Mahon sentencing

The headlines this Monday morning

The gunman suspected of carrying out America's deadliest terrorist attack since 9/11 was known to law enforcement agencies, the FBI has confirmed.

Omar Mateen, 29, was armed with a device thought to be a bomb, an assault rifle and a handgun, when he opened fire in the Pulse gay nightclub in Orlando yesterday morning before taking hostages.

He killed 50 people and left 53 others injured, many critically, after reportedly swearing allegiance to ISIS in a 911 call around the time of the attack.

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Barack Obama has urged Americans to decide "what kind of country we want to be" after the worst mass shooting in US history.

In a press conference, the US president condemned the Orlando massacre as an "act of terror and an act of hate."

His comments came as presumptive Republican nominee Donald Trump reiterated his call for a ban on foreign-born Muslims entering the United States.

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A Dublin man will be sentenced today for killing his stepson in May 2013.

David Mahon stabbed Dean Fitzpatrick, the son of his wife, outside his apartment on the Malahide Road following an argument.

The 45-year-old admitted holding the knife that killed Mr Fitzpatrick but claimed it was accident.

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A team of divers is due to carry out a search off the coast of Co Clare after a car was taken from the water there last night.

Emergency services removed the vehicle from the sea after being called to the scene at Quilty at around 8pm last night.

No passengers were found in the car when it emerged. It is not known how it entered the water. 

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Oscar Pistorius is due back in court today to be sentenced for the murder of his girlfriend Reeva Steeenkamp.

The South African athlete is expected to be given more jail time, after his original manslaughter conviction was upgraded to murder by the South African Supreme Court last December.

He shot Ms Steeenkamp dead on Valentine’s Day 2013, later claiming he mistook her for an intruder.