© USGS
An earthquake of 7.7 magnitude was registered in southern Chile on Sunday, prompting a tsunami threat message for areas as far as 1,000 kilometers (620 miles) from the epicenter.

The quake's epicenter was 225km (140 miles) southwest of Puerto Montt in southern Chile, according to the United States Geological Survey (USGS), with a depth of about 15km (nine miles).

The National Emergency Office of the Chilean Interior Ministry and Public Security (ONEMI) has warned people in the coastal regions to leave the areas due to the tsunami threat.

People in the Biobio, Araucania, Los Rios, and Aysen regions have been advised to evacuate, ONEMI said on its official Twitter account.

Based on the Pacific Tsunami Warning Center's threat messages, "hazardous tsunami waves are forecast for some coasts." An earlier message said tsunami waves were "possible" within a 1,000km radius from the epicenter. Tsunami waves of up to three meters above the tide level might reach some coasts of Chile, it said.