I'm heartbroken by Manchester attack, says Obama

Former U.S. president Barack Obama today said as the father of two daughters, he is heartbroken by the extraordinary tragedy that has occurred in Manchester.

Obama said in a video posted by German Chancellor Angela Merkel's spokesperson, the CNN reported.

Standing alongside Merkel and Archbishop of Canterbury Justin Welby in Berlin, Obama offered his condolences to those affected by the suicide bombing, which targeted a pop concert attended mostly by teenage girls.

"To all the families who have been affected, to all those who are still recovering, to those who have lost loved ones, it's unimaginable to think about the cruelty and the violence that the city of Manchester has suffered," Obama said.

"Our thoughts and prayers are with all of you. There are families all around the world who are grieving with you," he added.

Obama said that the city had shown its character in the "kindness and ways in which you are assisting each other" in the wake of the attack, which left at least 22 dead.

President Donald Trump condemned the perpetrators of the attack, calling them "evil losers.