New Delhi, Feb 2 (IANS) A powerful 6.1 magnitude earthquake jolted Hindu Kush mountain range along Afghanistan-Pakistan border that led to mild tremors in Delhi-NCR and parts of Jammu & Kashmir on Saturday evening.According to an India Meteorological Department (IMD) official, the depth of the earthquake was 212 km and the tremors took place around 5.34 p.m.The tremors in Delhi-NCR lasted for 40-50 seconds, the official said. --IANS spk/prs