WASHINGTON - A US federal judge on Sunday denied a motion by George Papadopoulos, a former aide for Donald Trump's 2016 presidential campaign, seeking to postpone his sentence pending a separate case he hoped would lead to his conviction being overturned.

Papadopoulos will report to jail on Monday to start his 14- day sentence after judge Randolph Moss dismissed his 11th-hour bid to remain on bail.

Papadopoulos, who pleaded guilty to lying to federal agents probing ties between the campaign and Russia, had sought to delay his sentence while a separate case challenging the legality of Special Counsel Robert Mueller's appointment is ongoing. Moss said Papadopoulos' motion lacked merit.

"The court, accordingly, concludes that Papadopoulos' motion for a stay pending his appeal of this decision lacks merit," Moss wrote in his ruling. "Plaintiff's motion to continue bail and motion to stay his surrender date are hereby denied."

Reuters