The bidding for SingTel's Australian satellite unit is proceeding to its final round, with companies still in the running said to include France-headquartered telco Eutelsat, Luxembourg-based satellite owner SES, and British satellite company Inmarsat.

Joining them is a group comprising TPG Capital, Blackstone Group and Malaysia's Measat Global, reported Bloomberg on Wednesday, citing unidentified sources.

Bloomberg also said that private equity firms KKR & Co and Carlyle Group have dropped out of the bidding for SingTel's Optus Satellite unit, which is said to be priced at more than A$2 billion (S$2.3 billion).

Final offers for the satellite company are due next month, sources told Bloomberg. The sale would be the largest telecommunications deal in Australia in more than a decade.