Source: Christina Finn/TheJournal.ie

THE IRISH FLAG are being flown at half mast at Government Buildings and Leinster House in memory of the victims of the mass shooting at a gay nightclub in Florida.

Some 49 people were killed, and more than 50 injured, at Pulse nightclub in Orlando – the worst mass shooting in US history.

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The tricolour is also flying at half mast at garda headquarters.

The Irish Flag flies at half mast over Garda Headquarters in support of those who died in Orlando, Florida. pic.twitter.com/f7QCav3apq — Garda Info (@gardainfo) June 14, 2016 Source: Garda Info /Twitter

Vigils to honour the victims have been held across the world.

Thousands attended a vigil organised by gay rights organisations and LGBT support groups in Dublin yesterday evening.

Meanwhile, a number of landmarks were lit up in rainbow colours, including the Eiffel Tower in Paris, in a mark of solidarity with the LGBT community.

Source: Associated Press

Books of condolences are open in a number of locations, including at the Mansion House in Dublin.

The gunman responsible for the massacre, Omar Mateen, was a regular at the gay nightspot, according to US media reports.

FBI chief James Comey said he was “highly confident” Mateen had been “radicalised” while consuming online propaganda and that he had claimed allegiance to the so-called Islamic State during the attack.

Contains reporting from © AFP 2016

Note: Anyone feeling distressed in the wake of the attack can contact the National LGBT Helpline via www.lgbt.ie or 1890 929 539.