Veteran journalist Martin Bashir is "seriously unwell" with coronavirus-related complications, the BBC has said.
The 57-year-old, best known for his 1995 interview with Diana, Princess of Wales, currently works as the BBC News religion editor.
LONDON, ENGLAND - OCTOBER 09: Martin Bashir attends "The X Factor: Celebrity" launch photocall at The Mayfair Hotel on October 09, 2019 in London, England. (Photo by Mike Marsland/WireImage)
SANTA MARIA, UNITED STATES: British journalist Martin Bashir (C) arrives with two unidentified men at Santa Barbara County Superior Court in Santa Maria, CA, 01 March 2005 to be the first witnesses to be called at Michael Jackson's child sex abuse trial. Bashir made the documentary "Living With Michael Jackson" that was broadcast in February 2003, in which Jackson admitted sleeping in the same bed as his young visitors, that triggered the investigation into the singer's relationship with his accuser, who is now 15. AFP PHOTO / Robyn BECK (Photo credit should read ROBYN BECK/AFP via Getty Images)
Martin Bashir addresses a New York rally calling for the immediate release of kidnapped journalist Alan Johnston. (Photo by Wesley Johnson - PA Images/PA Images via Getty Images)
BEVERLY HILLS, CA - JULY 26: (L-R) Anchors Martin Bashir and Cynthia McFadden speak during the ABC portion of the Television Critics Association Press Tour at the Beverly Hilton Hotel on July 26, 2007 in Beverly Hills, California. (Photo by Frederick M. Brown/Getty Images)
Television journalist Martin Bashir and family attend the Camp Rock premiere on June 11, 2008 at the Ziegfeld Theatre in New York City. (Photo by Jim Spellman/WireImage)
LATE NIGHT WITH JIMMY FALLON -- Episode 400 -- Pictured: (l-r) Martin Bashir during an interview with Jimmy Fallon on February 24, 2011 (Photo by Lloyd Bishop/NBCU Photo Bank/NBCUniversal via Getty Images via Getty Images)
TODAY -- Pictured: (l-r) Lola Ogunnaike, Martin Bashir and Matt Lauer appear on NBC News' "Today" show (Photo by Peter Kramer/NBCU Photo Bank/NBCUniversal via Getty Images via Getty Images)
LONDON, ENGLAND - NOVEMBER 23: (L-R) Ben Foden, Thom Evans and Levi Davis from Try Star with Martin Bashir backstage during "X Factor Celebrity" at LH2 Studios on November 23, 2019 in London, England. (Photo by Jeff Spicer/Getty Images)
NEW YORK, NY - APRIL 07: Martin Bashir attends the "Railway Man" premiere on April 7, 2014 in New York, United States. (Photo by Robin Marchant/Getty Images)
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A spokeswoman for the BBC said: "We are sorry to say that Martin is seriously unwell with Covid-19 related complications.
"Everyone at the BBC is wishing him a full recovery.
"We'd ask that his privacy, and that of his family, is respected at this time."
Bashir began working as a journalist in 1986 but made headlines around the world in 1995 for his BBC interview with Diana, Princess of Wales for Panorama.
That interview has seen renewed interest in the lead up to a new Channel 4 film, which examines the circumstances behind their meeting, airing on Wednesday night.
Bashir's other high-profile interviews have included the suspects in the Stephen Lawrence murder case, entertainer Michael Barrymore, Jeffrey Archer and Major Charles Ingram, dubbed "the coughing major".
In 2003, he conducted a series of interviews with pop singer Michael Jackson for the controversial ITV documentary Living With Michael Jackson.
He later moved to the US where he co-anchored the current affairs show Nightline on ABC before moving to MSNBC, where he served as a political commentator until 2013.
He subsequently returned to the BBC as the broadcaster's religion editor.
October 2019 saw him compete in the celebrity spin-off of X Factor.