At least 12 schoolgirls died in a stampede at their school in Afghanistan's Takhar province when they tried to run out as a major quake struck on Monday, the media reported.The panic-stricken girls were killed while trying to flee the school building, the Independent reported.An earthquake measuring 7.5 on the Richter scale jolted Afghanistan, Pakistan and northern India. The epicentre of the temblor was 45 km south-southwest of Jarm city in Afghanistan, around 240 km from here.