WASHINGTON - Jared Kushner, White House senior advisor and President Trump's son-in-law, used WhatsApp for official business, a top Democrat says.
Democrat Elijah Cummings, chairman of the House Oversight Committee, made the allegations in a letter to the White House on Thursday.
It is unclear whether Mr Kushner allegedly used the messaging app to discuss classified information.
A probe into the use of personal email accounts at the White House is ongoing.
Mr Cummings pressed the White House for further information on the investigation in his letter.
"The White House's failure to provide documents and information is obstructing the committee's investigation into allegations of violations of federal records laws by White House officials," he wrote.
His letter notes that Mr Kushner's lawyer, Abbe Lowell, said his client had sent screenshots of his WhatsApp messages to his White House email account or the US National Security Council.
Mr Lowell could not say whether his client, who serves as President Trump's advisor on the Middle East, used WhatsApp to share classified information, he added.
But in response to the letter, Mr Lowell said that Mr Cummings had not been "completely accurate", according to Reuters news agency.
Mr Cummings also wrote in his letter that Ivanka Trump - President Trump's daughter and Mr Kushner's wife, who is also a White House adviser - continued to receive emails related to official business on a personal email account.
A review into her emails revealed in November 2018 that she had used her private address to contact government officials.
Ms Trump sent the emails before she was briefed on the rules, her lawyer says.
White House spokesman Steven Groves said: "As with all properly authorised oversight requests, the White House will review the letter and will provide a reasonable response in due course."(FA)
Kushner 'used WhatsApp for official duties', top Democrat
UnpublishedVideos
-
Future of car-plane, see it to believe it
-
Mehdi Hasan: Islam is a peaceful religion
-
Python swallows antelope whole in under an hour
-
Sangoku dance
-
flying 3 kites wonder!
-
Korea has talent
-
Paul Potts sings Nessun Dorma
-
Susan Boyle - Britain's Got Talent
-
Twist and Pulse - Britain's Got Talent
-
Shaheen Jafargholi (HQ) Britain's Got Talent
High-Quality clip of 12-year-old singer Shaheen Jafargholi auditioning on Britain's Got Talent 2009. First he sings Valerie by The Zutons, as performed by Amy Winehouse, but, after Simon interrupts him and asks for a different song, he just blew everyone away. -
David Calvo juggles and solves Rubik's Cubes
-
Outdoor 'bubble pod' hotel unveiled