Former X Factor judge Gary Barlow and McFly drummer Harry Judd have tweeted messages of support to the remaining members of One Direction, departing band member Zayn Malik, and the band's fans tonight.
The stars tweeted:
Bum out news for 1D fans ? Sad to see Zayn go but you gotta do what you gotta do. Brave decision
Malik, 22, first shot to fame after appearing on the X Factor in 2010, now five years after joining One Direction he is quitting the band.Read the full story ›
Simon Cowell, one of the X Factor judges who helped put together boyband One Direction, has said he is "truly sorry" to see bandmate Zayn Malik leave.
In a statement posted on the band's official Facebook page Cowell wrote:
"I would like to say thank you to Zayn for everything he has done for One Direction.
"Since I first met Zayn in 2010, I have grown very, very fond - and immensely proud - of him. I have seen him grow in confidence and I am truly sorry to see him leave.
"As for One Direction, fans can rest assured that Niall, Liam, Harry and Louis are hugely excited about the future of the band."
My life with One Direction has been more than I could ever have imagined. But, after five years, I feel like it is now the right time for me to leave the band. I'd like to apologise to the fans if I've let anyone down, but I have to do what feels right in my heart.
I am leaving because I want to be a normal 22-year-old who is able to relax and have some private time out of the spotlight. I know I have four friends for life in Louis, Liam, Harry and Niall. I know they will continue to be the best band in the world.
Bradford-born singer Zayn Malik has left One Direction. Fans of the band have been tweeting their reaction.
@zaynmalik im not gunna say I won't miss you but im glad that you're putting yourself first. :) it's not gunna be the same without you.
One Direction have posted a statement on their official Facebook page today, confirming the departure of band mate Zayn Malik.
The statement said that "after five incredible years Zayn Malik has decided to leave" but that the other four members would continue as a band without him.
"We're really sad to see Zayn go, but we totally respect his decision and send him all our love for the future.
"The past five years have been beyond amazing, we've gone through so much together, so we will always be friends.
"The four of us will now continue. We're looking forward to recording the new album and seeing all the fans on the next stage of the world tour."
Zayn has left One Direction according to a statement on the band's Facebook page.
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This week the 22-year-old left the band's current tour due to stress.
Bradford-born One Direction star Zayn Malik is reportedly in talks about quitting the band.
The 22-year-old, who is engaged to Little Mix star Perrie Edwards, recently left the band's tour of Manilla and Jakarta for stress reasons.
Malik flew to the UK days after pictures emerged showing him with another woman in Thailand.
It is now being reported that the singer is no longer interested in being part of the band and has consulted his lawyers about quitting.
One Direction star Zayn Malik has quit the boyband's world tour after being "signed off with stress" and is coming home to the UK.
It comes after the singer was forced to defend himself online and declare his love for fiancee Perrie Edwards after pictures emerged of him apparently close to another woman.
Zayn has been signed off with stress and is flying back to the UK to recuperate. The band wish him well and will continue with their performances in Manila and Jakarta.
A picture, which has been widely shared and published online, showed Malik with his arm around the bare stomach of a woman in a cropped top.
They look like they are posing for the picture and are both smiling, appearing to be cheek-to-cheek.
A second photo, taken from behind, shows Malik standing close to the woman and their hands and arms appear to be interlinked.
Malik, along with bandmate, Louis Tomlinson, have been asked to post bail bonds of thousands of pounds each and the prospect of having their concerts axed after Philippines immigration officials deemed them a risk to the public interest.
One Direction stars Zayn Malik and Louis Tomlinson have been asked to post bail bonds of thousands of pounds each and the prospect of having their concerts axed after Philippines immigration officials warned them to behave themselves.
The singers are considered at risk of violating public interest following a video of them which was leaked last year.
Both men featured in a video, widely reported on last year, in which they are shown allegedly smoking cannabis and joking about drug use.
The country's Bureau of Immigration said the pair had been asked to post bonds of more than £3,000 each which will be forfeited if they fall foul of the regulations.
The boyband, who first found fame on The X Factor, are performing in the country as part of their world tour.
The condition is intended to protect the public interest should the band members commit any violation during their stay in the Philippines
An Immigration bureau spokeswoman said the band will be stopped from performing if they fail to post the bond before the concert.
One Direction are not the first band to run into trouble with officialdom in the Philippines - Almost 50 years ago The Beatles were forced to flee the country pursued by an angry mob after they were seen to have snubbed the country's then-first lady Imelda Marcos.