News: S32 Deals of the day-Mergers and acquisitions

March 22 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 0930 GMT on Friday:

** EU antitrust regulators have resumed their investigation into British Airways owner IAG's ICAG.L 400-million-euro ($432.7 million)) bid to buy out Air Europa, according to an update on the European Commission website.

** A planned merger between Vodafone's VOD.L UK operation and Hutchison's 0001.HK Three UK unit could face a 24-week in-depth investigation after Britain's antitrust regulator said the tie-up risked leaving consumers worse off.

** Italy's second-largest bank UniCredit CRDI.MI sold its 4.99% stake in construction group WeBuild WBD.MI at 2.20 euros per share through an accelerated book-building procedure, a source close to the deal said.

** Telkom TKGJ.J , South Africa's third-biggest telecom company, said it had entered into an agreement to sell its masts and towers business, Swiftnet, for 6.75 billion rand ($357 million).

** Chinese offshore oil and gas major CNOOC 0883.HK , 600938.SS said it had filed an arbitration claim to establish a right over Hess' HES.N stake in the giant Guyana oilfield Stabroek in the event of the U.S. firm's sale to Chevron CVX.N .

** Australian coal trader M Resources and Singapore's GEAR plan a funding round after their $1.65-billion purchase of South32's (S32) Illawarra metallurgical coal operations, a source familiar with the matter said.

** Brazilian oil and gas company Enauta ENAT3.SA said on Thursday that it has signed a contract to sell 20% of its stake in the concession to the BS-4 block, which includes the Atlanta and Oliva oil fields, to affiliated companies of Westlawn Americas Offshore (WAO) for $301.7 million.

** Microsoft MSFT.O has agreed to pay AI startup Inflection about $650 million in cash in an unusual deal that would allow Microsoft to use Inflection's models and hire most of the startup's staff including its co-founders, a person familiar with the matter told Reuters on Thursday.