Colombo: A UN panel has said the Sri Lankan military committed war crimes in its final decisive offense against Tamil Tigers in 2009. However, the Lankan Army has described the charge as unsubstantiated.

The three-member panel, appointed by UN Secretary General Ban ki-Moon submitted its report last week without making it public, but leaked excerpts were published in a daily.

According to the daily, the report has described this as ‘credible’ allegations that Sri Lankan military systematically targeted hospitals in the Tamil dominated Vanni area and executed some of the captured LTTE cadres after the war.

The panel has also alleged that LTTE had held Vanni population hostage and executed those trying to escape in beginning of February 2009.

The paper said, the UN panel had dismissed the findings and process of the 'Sri Lankan Lessons Learnt and Reconciliation Committee' and demand that Colombo should launch a "genuine" investigation into the war crimes charges and other alleged violations of international and human rights law, committed by both sides.

The panel report was handed over to the Sri Lankan government on the eve of Sinhala New Year.