BEIRUT—At least 22 people were killed and 79 injured when a fuel tank exploded in northern Lebanon early on Sunday, the health minister said. Military and security sources said that the army had seized a fuel storage tank hidden by black marketeers and was in the midst of handing out gasoline to residents when the explosion took place. Lebanon is suffering from a severe fuel shortage, leading to long lines at gas stations and extended blackouts. The disaster happened in the town of Altalil, in the Akkar region that is one of Lebanon’s poorest areas. About 200 people were nearby at the time of the explosion, eyewitnesses said. Caretaker Health Minister Hamad Hassan said the worst cases of burns probably needed quick treatment abroad to save their lives. “We need urgent help to evacuate some of the injured abroad..there are cases (of burns) that are more than the ability of …