Tuesday's tremor was felt in the capital of the country - Jakarta. Government sources informed that the quake was at a depth of 23 kilometers and about 83 kilometers southeast of Ujungkulon on Java island.
On Monday, Apr 4, the nation had experienced another major quake with 7.1 magnitude, occurred 293 kilometers northwest the capital Jakarta at a depth of 10 kilometers.
Previously, tsunami alert was issued in the country but later it was removed. However, no casualties have been reported yet.
Earlier, Japan had experienced several earthquakes followed by a massive tsunami and nuclear leak in the country's Fukushima nuclear plant. More than 10,000 people were dead in the calamities of the nation.
Extending its miseries, latest media reports claimed that Japanese engineers dumped tonnes of contaminated water from the crippled Fukushima nuclear plant into the sea as they pumped coloured powder in a desperate measure to trace the source of dangerous leakages in reactor complex.
However, Japan's government officials assured people as they stated that the move by the engineers does not pose any risk to human health. Previously, nuclear poisoning was reported from several parts of the country.