Ariana Grande Says She's 'Broken' After Manchester Concert Explosion

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Ariana Grande attends Tiffany & Co.'s unveiling of the newly renovated Beverly Hills store and debut of 2016 Tiffany masterpieces at Tiffany & Co. on Oct. 13, 2016 in Beverly Hills, Calif. 

Hours after an explosion left at least 22 dead and more than 50 injured outside her Manchester Arena concert, Ariana Grande took to Twitter to write that she was "broken" by the incident.

 "From the bottom of my heart, i am so so sorry," she continued. "I don't have words."

Reports of an explosion in the foyer of the U.K. concert venue came around 10:35 p.m. local time Monday night (May 22) following Grande's show. Her rep assured Billboard the pop star was "okay" following the blast, but Greater Manchester Police quickly confirmed that there were fatalities and injuries at the scene.

In an early Tuesday morning press conference, police said the explosion is being treated as a likely "terrorist incident."