CREESLOUGH, Ireland (Reuters) -Ten people, including two teenagers and a younger girl, were killed in an explosion at a petrol station in the Irish county of Donegal, police said on Saturday, adding that the incident appeared to be “a tragic accident”. The police said no more casualties were expected from the explosion which happened shortly after 3 p.m. local time (1400 GMT) on Friday at the Applegreen petrol station on the outskirts of the village of Creeslough. The dead, who were all from the local area, also included four men and three women. Eight people are being treated in hospital, inc…