An earthquake measuring 6.7 on the Richter scale shook the Andaman and Nicobar Islands and parts of Chennai today triggering panic among residents.

With its epicentre near Andaman and Nicobar Islands, the quake occurring at around 1700 hrs lasted a few seconds and rocked several parts of Chennai including the busy T Nagar, Nugambakkam and Koyambedu areas.

Employees working in a multi-storeyed building in Venkatnarayana Road in T Nagar rushed out of office as they experienced the tremor.