Moody's likely to cut Greece again unless mkts calm

ATHENS, April 22 (Reuters) - Moody's Investors Service cut Greece's sovereign debt rating to A3 on Thursday and said it was likely to reduce it further unless the government was able to restore confidence in markets.

Moody's also said there was a significant risk the euro zone state's debt would stabilise at more costly levels than previously thought and the "fractuous mobilisation of external assistance" had made it significantly more difficult for Greece to maintain its debt metrics in the A range.

"It is unikely that the rating will remain at A3, unless the government's actions can restore confidence in the markets and counteract the prevailing headwinds of high interest rates and low growth that could ultimately undermine the government's ability to sustainably cut debt levels," said Moody's Senior Analyst for Greece Sarah Carlson. (Reporting by Ingrid Melander; writing by Michael Winfrey)