JAKARTA, Dec. 1 (Xinhua) -- An earthquake measuring 6.6 on the Richter scale struck Indonesia's North Sumatra province Friday, but there is no immediate report of injuries or damage so far.

    The tremor hit at 10:58 local time (0358 GMT) and was centered in the town of Tebing Tinggi, some 70 km east of the provincial capital of Medan, said Hardiyatno, a national earthquake analysis staff with the Meteorology and Geophysics Agency.