A mild quake measuring 3.3 on Richter scale jolted surrounding area of Sarayan in Iran's South Khorasan province on late Wednesday. The tremor's epicenter was at 33.99 degrees latitude and 58.57 degrees longitude and in depth of 10 kilometers underground, (IRNA) news agency reported citing a report of the seismography center affiliated to Tehran University Geophysics Institute. There is no immediate report on possible casualties or damage.