SINGAPORE – The proposed acquisition of telecommunications business M1 by fellow telco Simba collapsed this week, after regulators suspended their review of Simba’s $1.43 billion bid amid a probe into an alleged breach.Tuas Limited, the Australian-listed owner of Singapore telecommunication operator Simba, said on May 22 it has terminated its sale and purchase agreement to buy M1 from Keppel.Had it gone through, the deal would have marked the first telco consolidation in Singapore’s history and potentially eased intense competition among the country’s four telcos, which has eroded prices and weighed on profitability.Following the collapse of the sale, Keppel pushed back plans…