Days after the FCC signaled its intent to support the merger between T-Mobile and Sprint, the Department of Justice has reportedly decided to block the deal.

According to CNBC and Reuters, the DOJ's antitrust division has recommended that the agency file a lawsuit to block the deal between the two wireless carriers. The agency will reportedly make its final decision in the next month.

The FCC's seal of approval came after the carriers agreed to sell off Sprint subsidiary Boost Mobile to spur competition at the low-cost end of the market. T-Mobile and Sprint also agreed to numerous nationwide milestone goals around the 5G infrastructure rollout over the next half-dozen years.

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