US Justice Department (DOJ) has fired several prosecutors who worked on criminal investigation into US President Donald Trump, CNN reported citing sources familiar with the matter.Acting Attorney General James McHenry in a letter written to the officials said they cannot be "trusted" to "faithfully" implement agenda of Trump.

Trump has vowed to end the "weaponisation" of the Justice Department and has set about nominating and appointing allies to top posts in the department. Smith himself resigned from the Justice Department shortly before Trump took office, and both federal cases have effectively ended.

President Donald Trump's administration on Monday fired more than a dozen Justice Department lawyers who brought two criminal cases against him, an official said, as the Republican moves swiftly to exert greater control over the department.

The Justice Department has fired more than a dozen lawyers, involved in criminal investigations into Donald Trump during his campaign for president, sources familiar with the matter confirmed to CNN,

Trump vowed to rid the Justice Department of what he says is partisan bias. Ex-officials say he's using retaliation and intimidation to thwart potential investigations of his second term.