British police say an incident attended by officers and army bomb disposal teams in Manchester is now over and the area has been deemed safe. The move sparked a brief period of alarm, coming amid a fast-moving investigation into Monday night's deadly bomb blast at Manchester Arena that killed 22. Queen Elizabeth II has arrived at a children's hospital to visit those injured in the Manchester Arena blast and the medical staff treating them. Citing unnamed federal security sources, Focus reports that British-born Salman Abedi twice flew from a German airport in recent years and wasn't on any international watch list. The magazine also reports that British police informed their German counterparts Abedi had received paramilitary training in Syria. British Prime Minister Theresa May says progress is being made in the Manchester bombing investigation but the national threat level remains critical — meaning another attack may be imminent. The threat level for Britain was raised to its highest level after bomber Salman Abedi killed 22 people at a concert Monday night at Manchester Arena. Police arrested two more people and were on Thursday searching a new site in Manchester suspected of links to the bombing that killed 22 people at a pop concert, as British authorities complained bitterly about investigation leaks by U.S.