(CNN) At least 16 people have died after the Philippines was rattled by two major earthquakes, authorities said on Tuesday.

A further 81 people were injured and 14 remain missing, a statement from the Office of Civil Defense read.

The first tremor, a magnitude 6.1 quake, hit the Southeast Asian archipelago's Luzon island on Monday.

On Tuesday afternoon local time, a magnitude 6.3 earthquake with a depth of 53.6 miles (86.3km) was registered on the island of Samar in central Philippines, according to the US Geological Survey (USGS). No tsunami warning has been issued.

Some 29 structures and buildings sustained damage from the first quake, the Office of Civil Defense said. Power in certain areas of Eastern Samar was out, according to CNN Philippines.

Read More