Shehroze Chaudhry, made social media posts talking about his role with Islamic State, gave several media interviews but a police investigation found the 25-year-old had no links to the group.
In 2014, members of the Sunni Muslim jihadist group opened fire on Shi'ites who were celebrating Ahura, killing eight.
The Beatles is the name given to a a four-strong Islamic State unit because they were English speakers.
But three judges from England's Court of Appeal unanimously agreed Begum could have a fair and effective appeal of that decision only if she were permitted to come back to Britain.
The blast targeted a security point at the entrance to Taraghin, 780 km (590 miles) south of Tripoli, but did not cause any casualties, a resident said.
According to the British intelligence agencies, he was appointed leader hours after al-Baghdadi's assassination during a special operation held by US special forces.
An affiliate of the Islamic State terrorist group claimed responsibility for the Nangarhar bombing, according to the SITE Intelligence Group. No one has claimed the hospital attack.
Experts caution that Islamic State terror cells could be moving from east to west, potentially getting closer to Suez Canal, mainland Egypt
The ongoing violence underscored the challenges to securing lasting peace in Afghanistan even after the United States signed a troop withdrawal agreement with the militant Taliban in February.