A new eruption started at Karthala volcano (the 4th within two years). Details of the eruption are still scarse, but observations from the capital Moroni (15 km distant) suggest that the activity might not take place in the Chungu Chahale crater, where the other recent eruptions were located, but north of it or perhaps even outside the caldera.
Residents of Moroni report seing "jets of red flames above the summit of Karthala" in the night of 12-13 January. On 13 January, eruptive tremor was low but a number of earthquakes could be felt in Moroni and an ash plume was observed above the volcano.

Local newspapers report that the eruption at Karthala volcano already has ended, with the lava lake being crusted over and seismicity having decreased to background levels on the afternoon of June, 1st, 2006.

The lava lake at the crater bottom is still active, alimented by one or two fountains. No lateral fissures have opened and the amount of gas and ash released is small.

A new eruption at Karthala volcano started on the evening of Sunday 28 May 2006 at 18h05 local time. Fresh magma has formed a lava lake inside Chungu Chahalé crater in the caldera. Different from the last eruptions in 2005, no explosive activity was reported at the beginning of the eruption, only a thick plume of gas and steam above the crater, extending 60 km to the northwest. The absence of explosive activity can be explained because the crater contained no water.