United Nations Secretary-General Ban Ki-moon has arrived in Sri Lanka on a visit in which he is expected to discuss post-civil war reconciliation and human rights accountability with the country's leaders.

Ban arrived Wednesday on his second trip to the South Asian island nation. His first was in May 2009, days after the bloody end of the civil war. Ban inspected the devastation from the air then.

During his stay Ban is to travel to the ethnic Sinhala-majority south as well as the minority Tamil-dominated north.

The civil war was fought by Tamil rebels who were demanding an independent state and complaining of systematic marginalization.

A fact-finding committee appointed by Ban said about 40,000 ethnic Tamils may have been killed in the final months of fighting.