At least 20 people were killed and possibly "hundreds" of others were injured after one or more loud bangs were heard Monday night at an Ariana Grande concert at Manchester Arena in England, multiple law enforcement told NBC News.
Multiple U.S. officials briefed on the investigation so far say authorities in the U.K. suspect that the incident was conducted by a suicide bomber.
BBC is reporting that this is likely a terror incident:
The North West Counter Terrorism Unit is treating the incident in Manchester as a possible terrorist incident, sources said.
Senior national Counter-Terrorism officers are assembling in London and are liaising with the Home Office.
Early estimates put the number of fatalities in double figures, but these are very early stages.
We will keep you updated on the developments.