Shortly after a bomb blast at the Manchester Arena where Ariana Grande was performing left 19 people dead and at least 50 injured, the pop star took to her Twitter account to apologise.
Footage of screaming fans leaving the arena have since emerged and British police have called the blasts a 'terrorist incident.'
- WATCH: Blast forces Ariana Grande fans to flee Manchester ArenaYouthful fans who were at US pop star Ariana Grande's concert in Manchester and parents waiting for their children outside described scenes of panic after an explosion ripped through the foyer on Monday night.
Officials are on high alert in Manchester after the blasts went off during the singer's closing set.
"Broken. From the bottom of my heart, I am so so sorry. I don't have words," she wrote on Twitter.
Meanwhile fan footage of the chaos on the night has emerged as thousands of people tried to escape harm.
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