'Broken' Ariana Grande speaks out following attack at her concert in Manchester

REUTERS/Mario Anzuoni

Ariana Grande wrote that she was "broken" after a bomb exploded at her concert in Manchester, England, on Monday night, killing at least 22 people and injuring dozens more, many of them young children.

After the police determined that an attacker had set off a bomb near the entrance of the Manchester Arena, where Grande was finishing a performance, Grande tweeted that she was "broken" and "so so sorry."

Sources who were with the singer after the attack told TMZ that Grande was "in hysterics" from knowing that young children who came to see her were killed.

Despite initial reports that Grande had suspended her world tour, all future concerts were still on, a source from Grande's team told the Associated Press.  The singer's future tour includes stops in London, Belgium, Poland, Germany, and Switzerland before heading to South America and Asia.

The source, who did not want to be named, said that Grande was focusing her attention on the victims rather than the tour.

The Islamic State terrorist group claimed responsibility for the attack, which the Manchester police said was carried out by a single person who died in the explosion.

Grande's manager, Scooter Braun, issued a statement condemning the attack.

"We mourn the lives of children and loved ones taken by this cowardly act," he wrote. "We are thankful for the selfless service tonight of Manchester's first responders who rushed towards danger to help save lives."