The US Justice Department sued to block Hewlett Packard Enterprise Co.’s $14 billion acquisition of Juniper Networks Inc., arguing the tie-up would harm competition in the market for enterprise wireless equipment used by large companies,

The U.S. Justice Department has sued to block tech giant HPE from acquiring Juniper Networks, the networking firm, citing antitrust concerns.

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 and third-largest companies providing wireless networking solutions for large corporate customers.

The Department of Justice has sued to block Hewlett Packard Enterprise's $14 billion deal to acquire Juniper Networks, according to a complaint filed on Thursday in a federal court in California. Shares of network equipment maker fell about 3% while the server maker's stock was down about 2%.