UK Home Secretary Amber Rudd stated on Wednesday that Abedi had been on the radar of the British security services and had recently returned to the UK from Libya. US officials told CNN's Barbara Starr that Abedi came back just days before the attack. British intelligence services are now trying to answer a series of urgent questions, including whether Abedi had any contact with terrorist operatives while in Libya and whether he received any bomb-making training while he was there. A British counterterrorism official told CNN on Tuesday evening that British intelligence services had not yet uncovered evidence of such ties, but cautioned it was very early in the investigation. Abedi's travel is being scrutinized because recent intelligence obtained by the US suggests that ISIS has set up an external operations wing in Libya tasked with plotting attacks in Europe.

Source: CNN May 24, 2017 16:30 UTC