Ubisoft Entertainment announced today it would consider Electronic Arts' stake building as "hostile", until it received further details from the company.

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"Pending further information, we consider this operation as hostile," an Ubisoft spokesman told Reuters. "We think this operation is aimed at securing the studios of Ubisoft that are ready to face the next generation of gaming consoles," he added.

Electronic Arts announced earlier today it has bought a 19.9 percent stake in Ubisoft. EA purchased the shares as a block from Talpa Beheer B.V.