US President Donald Trump's personal lawyer Michael Cohen is seeking a temporary restraining order regarding searches of Cohen's home and office by FBI agents, a Justice Department spokesman says.
Such an order would be sought to stop the government from using seized materials, according to a person familiar with the investigation.
A hearing on the searches has been set for 10.30am local time on Friday in a Manhattan federal court, the courthouse said.
The raids followed a referral by US Special Counsel Robert Mueller, who is investigating allegations of Russian meddling in the 2016 US elections, a probe that has expanded to include looking into whether the Trump campaign colluded with Moscow.
Monday's raids infuriated Trump, who has called the special counsel investigation a "witch hunt". After the searches, he stepped up attacks against Mueller's probe before saying on Thursday that he was co-operating with the authorities.
Both Trump and Moscow deny any wrongdoing.
When reached by phone, a lawyer for Cohen was not immediately available for a request to comment.