Someone just bombed an Ariana Grande Concert in Manchester:

An explosion that may have been a suicide bombing killed at least 19 people on Monday night and wounded 59 others at an Ariana Grande concert filled with adoring adolescent fans, in what the police were treating as a terrorist attack.

Panic and mayhem seized the crowd at the Manchester Arena as the blast reverberated through the building, just as the show was ending and pink balloons were dropping from the rafters in a signature flourish by Ms. Grande, a 23-year-old American pop star on an international tour.

Traumatized concertgoers, including children separated from parents, screamed and fled in what appeared to be the deadliest episode of terrorism in Britain since the 2005 London transit bombings.

Speaking to reporters early Tuesday, Manchester’s chief constable, Ian Hopkins, said the police learned of the explosion around 10:33 p.m. The wounded were taken to six hospitals, he added.

There was no immediate word from the authorities on the precise cause of the blast, but unconfirmed reports said a suicide bomber might have detonated a nail-filled explosive device.

Intelligence officials in the United States were briefed on the Manchester explosion late Monday and were told that it appeared to be a terrorist attack, according to a senior official who was not authorized to discuss the matter publicly and spoke on the condition of anonymity.

The scene in downtown Manchester immediately evoked the terrorist attacks in Paris in November 2015, which included a deadly assault inside the Bataclan concert hall, where the Eagles of Death Metal had been playing. But unlike the Bataclan show, the Manchester concert was filled with young teenagers.

Why the f%$# would anyone bomb an Ariana Grande concert? (Seriously, no irate music critic jokes right now.  It’s too soon.)