At least three potential bidders interested in Polish mobile telecoms operator Polkomtel have hired investment banks as a sale process gets under way, according to Dow Jones Newswires. Among the buyout firms that have begun looking at the company, TPG and Blackstone Group, which are working on a joint bid, have reportedly hired JPMorgan Chase to advise them. Apax Partners has mandated Morgan Stanley, while Swedish operator TeliaSonera has appointed Bank of America Merrill Lynch. People familiar with the matter say other private-equity buyers such as CVC Capital Partners and Bain Capital, along with trade bidders including Turkey’s Turkcell, also are likely to participate. Polkomtel could attract offers in the region of around EUR4 billion, according to previous reports, and could provide an opportunity for Vodafone to continue its recent strategy of divesting noncore assets. Vodafone owns 25 percent of Polkomtel.