Dead victim's Snapchat video from INSIDE Florida gay club captures the terrifying moment when ISIS gunman opened fire and killed 49

Amanda Alvear,one of the Orlando debacle victims filmed and shared the footage with friends on Snapchat of the moment gunshots rang out as terrorist Omar Mateen carried out his massacre in Pulse nightclub on Sunday.

During the night she had posted a series of upbeat videos that showed her friends dancing to Latin music. 

But in the final clip on her profile, the night turns into a horror scene. Amanda tries to explain to the camera what is happening as quickfire gunshots blast in the background. 

Clutching her face and looking fearful, she whispers 'shooting' then turns and the video cuts. 

It was confirmed on Monday that Amanda was one of the 49 people killed in the worst mass shooting in US history.

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