The DOJ has issued this press release.
See also this AP report. Senator Schumer’s office emailed over the following statement: “This decision will restore competition to an industry that is critical to our democracy. If left unchallenged, this merger would have created a virtual monopoly that could have done serious harm to the idea of free and fair elections…This action will prevent one company from garnering three times the market of its next closest competitor. Localities need choices in their voting machines, just like voters need choices on the ballot.”
MORE, from Roll Call.
UPDATE: The DOJ documents are here.