June 13, 2016 6:43 PM EDT

A customer at Pulse, the gay nightclub attacked on Sunday morning in Orlando, posted a Snapchat video that documented shots ringing out inside the bar.

ABC News has identified the user (who is also the woman seen at the end of the video) as 25-year-old Amanda Alvear. Officials say she was among the 49 victims killed in the attack.

“Yes, this is Amanda,” her brother wrote in a social media post sharing the video, according to ABC News. “She was creating a Snapchat story though the night. This is the last time anyone saw her. After this, she did receive and answer one call.”

[ABC News]

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