Police have confirmed that 22 people were killed and more than 50 injured in the incident, which happened at the end of the US star’s concert at the Manchester Arena.
Witnesses reported hearing a “huge bang” at the venue as children, teenagers and adults left the building with the lights going up.
Police confirmed they were treating it as a terrorist incident.
Ariana, who was not hurt in the blast, tweeted that she was “broken” by news of casualties.
broken.— Ariana Grande (@ArianaGrande) May 23, 2017
from the bottom of my heart, i am so so sorry. i don't have words.
Her manager Scooter Braun released a statement, saying he was heartbroken by the “senseless attack”.
Fellow musicians including Harry Styles, Katy Perry, Gary Barlow and Nicki Minaj all took to Twitter to pay tribute to the victims...
I'm heartbroken over what happened in Manchester tonight.— Harry Styles. (@Harry_Styles) May 23, 2017
Sending love to everyone involved. H
Sad, sad news from Manchester. Praying for all the victims and families involved.— Gary Barlow (@GaryBarlow) May 23, 2017
#Manchester has always been so close to my heart! These are innocent vulnerable kids, this could've been any of us! I'm devastated!— Rihanna (@rihanna) May 23, 2017
Absolutely heartbroken for #Manchester. Devastating news. My love, thoughts & prayers go out to all.— kylie minogue (@kylieminogue) May 23, 2017
💔Absolutely sickened & angered by this senseless, evil attack. Thoughts are with everybody effected. Such a disturbing time we live in 😔— Cheryl (@CherylOfficial) May 23, 2017
To see what has happened in Manchester makes me really sad. My thoughts are with those that are experiencing such tragedy at this time x— Liam (@LiamPayne) May 23, 2017
Up early & ready about what happened in Manchester. This is truly so senseless & heart breaking. My heart goes out to everyone involved— Kim Kardashian West (@KimKardashian) May 23, 2017
I can't imagine the fear and agony these parents must be going through searching for their kids 💔— Kim Kardashian West (@KimKardashian) May 23, 2017
Sending all my thoughts and prayers to Manchester. My heart is broken.— Rita Ora (@RitaOra) May 23, 2017
My thoughts, prayers and tears for all those affected by the Manchester tragedy tonight. I'm sending all my love.— Taylor Swift (@taylorswift13) May 23, 2017
No words can describe how I feel about what happened in Manchester. I don't wanna believe that the world we live in could be so cruel.— Bruno Mars (@BrunoMars) May 23, 2017
God bless the family and friends affected by this nightmare.— Bruno Mars (@BrunoMars) May 23, 2017
Absolutely Horrendous what happened in Manchester tonight. My thoughts are with the great people of Manchester and also Ari and her team xx— Niall Horan (@NiallOfficial) May 23, 2017
My heart hurts for my sister, Ariana & every family affected by this tragic event in the U.K. Innocent lives lost. I'm so sorry to hear this— NICKI MINAJ (@NICKIMINAJ) May 23, 2017
Sending love to the U.K., @ArianaGrande and all of her supporters who were caught up in this awful attack. Heartbreaking.— John Legend (@johnlegend) May 23, 2017
Our prayers and strength to the victims and their families involved in this tragedy. Stay strong. @ArianaGrande 🙏🏼— Christina Aguilera (@xtina) May 23, 2017
My thoughts and prayers are with all those affected by this horrific act in Manchester. We need to do better. We need to LOVE ONE ANOTHER.— Justin Timberlake (@jtimberlake) May 23, 2017
My thoughts and prayers go out to everyone affected in Manchester.— Selena Gomez (@selenagomez) May 23, 2017
every musician feels sick & responsible tonight—shows should be safe for you. truly a worst nightmare. sending love to manchester & ari— Lorde (@lorde) May 23, 2017
Just saw the news about Manchester... Our hearts are breaking 💔 Prayers for all who attended, their families, Ari and her whole crew.— Fifth Harmony (@FifthHarmony) May 23, 2017
Sending love to those affected in Manchester.— Ellie Goulding (@elliegoulding) May 22, 2017
what happened in Manchester tonight is absolutely horrible. sending my love and prayers to those affected. 💔— Kendall (@KendallJenner) May 23, 2017
MY PRAYERS GO OUT TO PPL OF MANCHESTER…HAD SPECIAL TIMES THERE FROM YOUTH & BEYOND— Cher (@cher) May 22, 2017
My thoughts and prayers are with the people of Manchester, any one affected, @ArianaGrande and the entire crew. Heartbreaking— P!nk (@Pink) May 23, 2017
Our prayers and strengh to the victims and their families involved in this tragedy in Manchester. Stay strong. @ArianaGrande 🙏🏾— Dwayne Johnson (@TheRock) May 22, 2017
Sending all my love to every single family at the Manchester show last night. So upsetting— Louis Tomlinson (@Louis_Tomlinson) May 23, 2017
Just heard the news what's happening in Manchester.. hope everyone safe & sound! 🙏🏽— Rio Ferdinand (@rioferdy5) May 22, 2017
No one should go to a concert and never come home 💔— Olly Murs (@ollyofficial) May 22, 2017
My heart is breaking for everybody affected by the atrocity in Manchester. #WeStandTogether— antanddec (@antanddec) May 23, 2017
My prayers and thoughts are with the victims and their families on this tragic evening. My heart is breaking for you tonight Manchester.— Nicole Scherzinger (@NicoleScherzy) May 23, 2017
Absolutely heartbreaking... My thoughts and prayers are with the victims and families affected in Manchester tonight. 🙏🏾— KELENDRIA ROWLAND (@KELLYROWLAND) May 23, 2017
So sad to wake up to the horrible news from Manchester! My heart goes out to all the families ❤ 😢— Tom Daley (@TomDaley1994) May 23, 2017
God bless everyone who was at Ariana's concert! My prayers are with you all and poor sweet Ariana! This is heartbreaking 💔— Khloé (@khloekardashian) May 23, 2017
Horrendous news to wake upto... My heart goes out to everyone who has been effected by this terrible tragedy... I'm in shock. #Manchester— michelle keegan (@michkeegan) May 23, 2017
I've just woken up to the horrific news. Sending all my love and thoughts to #Manchester 😢😢💔— Phillip Schofield (@Schofe) May 23, 2017
Such a terribly disturbing time for beautiful Manchester https://t.co/Hwthz0xvUs— Dannii Minogue (@DanniiMinogue) May 23, 2017
Just woke up and saw the news about Manchester and just can't believe it. Sending all my love to everyone there ❤️— nick grimshaw (@grimmers) May 23, 2017
Devastating news in Manchester ..... thinking and praying for everyone involved & their families. So sad what is happening in our World. 🙏🏼— Coleen Rooney (@ColeenRoo) May 23, 2017
Ariana is currently on the UK leg of her Dangerous Woman world tour and is due to perform at London’s O2 Arena on Thursday and Friday.
However, The O2 has tweeted to warn ticket holders that the concerts might not go ahead in the wake of the deadly attack.