(CNN) The Democratic National Committee tried and failed three times to serve Jared Kushner with a lawsuit at his Manhattan apartment and was turned away by a US Secret Service agent when it attempted to deliver the packet to the White House senior adviser's Washington, DC, home, according to court filings.

After consulting with a superior, the Secret Service agent told the server "figure out another way to attempt service," the DNC alleged.

The DNC next tried to deliver the lawsuit alleging Donald Trump's presidential campaign conspired with the Russian government to disrupt the 2016 election by certified mail, but the US Postal Service said no one at Kushner's home would sign for the package.

In a game of cat and mouse, the DNC has knocked on doors multiple times to try to alert Kushner, Trump's son-in-law and husband of fellow White House senior adviser Ivanka Trump, that he was named as a defendant in the lawsuit filed in April in New York federal court.

The server "tried to serve the doorperson, security guard, or mail clerk at Kushner's New York residence, or alternative to affix a copy of the service packet to Kushner's door," the DNC told the judge in a court filing. "But the staff at Kushner's building did not accept service," it said.

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