"Forgive me": Manchester bombing suspect said to have called mother before blast

Britons faced stepped-up security, authorities pushed forward with raids they said were uncovering key evidence and a trans-Atlantic rift opened Thursday in the aftermath of a deadly concert bombing.The investigation of the Manchester Arena attack that killed 22 people extended across Europe and into Libya, where most of the suspected bomber's family lived. Authorities in multiple countries worked to determine if Salman Abedi, who died in the blast, acted alone or with assistance from a sophisti