The U.S. Justice Department has filed suit to block Hewlett Packard Enterprise Co.’s proposed acquisition of Juniper Networks Inc. for $14 billion. Officials submitted the complaint today to the U.S. District Court for the Northern District of California.

WASHINGTON—The Justice Department on Thursday sued to block the tie-up of Hewlett Packard Enterprise and Juniper Networks, a $14 billion deal that would join the second-largest and third-largest providers of wireless networking solutions for large corporate customers.

Hewlett Packard Enterprise shares are trading lower Thursday after the U.S. Department of Justice (DOJ) filed an antitrust lawsuit to block its proposed $14 billion acquisition of Juniper Networks.

The Justice Department on Thursday sued to block Hewlett Packard Enterprise from buying Juniper Networks for $14 billion. Why it matters: This is the first antitrust case filed by the Trump administration,

The U.S. Department of Justice is suing to prevent HPE's $14 billion acquisition of Juniper Networks, saying that the blockbuster deal will “reduce competition and weaken innovation.”

DOJ cited reduced competition in the wireless market as the biggest problem with the proposed $14 billion sale of Juniper Networks to Hewlett Packard Enterprise. The vendors say they plan to “vigorously defend the transaction in court.

DOJ argued that the acquisition would eliminate competition and would lead to only two companies 'Cisco Systems and HPE' controlling more than 70 per cent of the US market for networking equipment

The Department of Justice has sued to block a merger involving Houston’s largest publicly traded software company a year after the deal was announced.