Moody's Investors Service said on Monday the Dubai's government's USD 20 bn 5-year, 4 % bond programme could support debt ratings of Dubai companies that were placed under review for a downgrade earlier this month. If there are no restrictions on how Dubai uses bond proceeds this could support Moody's ratings of Emaar, DP World, DIFC Investments, Dubai Holding Commercial Operations Group, Dubai Electricity and Water Authority and the Jebel Ali Free Zone. Moody's had said it could lower its debt and Islamic bond, or sukuk, ratings for the six firms, all linked to the Dubai government, by as much as two notches each. The review is due shortly.