iRobot said Monday that a planned deal to be acquired by Amazon would not go through, a development that led the Roomba floor vacuum maker to announce it would now lay off 31% of its staff.

In a release, the two companies said the European Union was poised to block the deal and that there was “no path to regulatory approval,” news that was first reported earlier this month by the Wall Street Journal.

The breakup has prompted the resignation of iRobot chairman and CEO Colin Angle.