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%.

Hewlett Packard Enterprise Co. representatives met with Donald Trump’s antitrust enforcers on Tuesday over its $14 billion bid to buy Juniper Networks Inc., according to people familiar with the matter.

Juniper Networks (NYSE:JNPR) fell 3% after the Dept. of Justice sued to block its planned $14 billion sale to Hewlett Packard Enterprise (HPE). The regulator argues that the combination would harm competition in the enterprise wireless market,