Chinese telecommunications giant Huawei said Tuesday that the United States is using "every tool at its disposal" including cyberattacks and threatening employees to disrupt its business operations, as the company's products remain blacklisted due to spying concerns.

The company also said that members of U.S. law enforcement routinely "threaten, menace, coerce, entice, and incite," current and former employees. Huawei alleges that the U.S. government has sent FBI agents to the homes of people affiliated with the company and launched investigations towards the firm based on false media reports.

Huawei stated that U.S. government officials have pretended to act like Huawei employees in order to bring charges towards the company.

Huawei did not provide any concrete evidence to back up the allegations, which come one day after the U.S. and Poland have agreed to investigate foreign 5G network providers such as Huawei.

Vice President Mike Pence, speaking Monday in Warsaw, Poland, with Polish President Andrzej Duda, said that the agreement "would ensure the security of our digital infrastructure" and that "this declaration we believe will set a vital example for the rest of Europe."

The Wall Street Journal reported Thursday that U.S. prosecutors were investigating allegations that Huawei conducted intellectual property theft. Portuguese multimedia producer Rui Oliveira said Huawei infringed on smartphone camera tech patents that he had in the U.S.

In a press statement, Huawei said it "categorically rejects the Mr. Oliveira's claims of patent infringement" and that "Mr. Oliveira proceeded to push a false narrative to the media in an attempt to tarnish Huawei's reputation."

In May, Huawei products were effectively banned in the U.S. due to a President Trump executive order, which declares foreign adversary threats to communications networks, technology and services a national emergency.

In December, Huawei CFO Meng Wanzhou was arrested in Canada at the request of the U.S. and was hit with a litany of charges including bank and wire fraud and conspiracy to commit bank and wire fraud to avoid U.S. sanctions on Iran.