An earthquake measuring 4.2 on the Richter scale jolted Shirvan in northeastern province of North Khorassan Monday morning, Iranian (IRNA) News Agency reported. According to the seismological base of the Geophysics Institute of Tehran University, the quake was epicentered in an area located at 37.57 degrees latitude and 57.66 degrees longitude. There were no reports of any casualties or damage to property caused by the quake.