The tremors were felt at the hill road, Bavuta Gudde and the light house at 11.50 am, Mining and Geology department officials said.
The tremors shook furniture in some offices from where people ran out in panic, local people in the area said.
According to Department of Mining and Geology Deputy Director Ramappa, the intensity of the mild tremor had not been established yet. It might be slightly over one magnitude on the Richter scale, which would not cause any damage.
