1.2031405-887697997
Ariana Grande sends emotional tweet after blast at her UK music gig Image Credit: AFP

New York: US pop star Ariana Grande late Monday said she felt at a loss for words after a suspected terror attack at her concert in the British city of Manchester.

In pictures: Deadly blast rocks UK concert

“Broken,” she wrote in her first reaction on Twitter.

“From the bottom of my heart, I am so so sorry. I don’t have words,” she wrote.

Police said at least 22 people were killed and around 59 wounded in the attack at the 21,000-capacity Manchester Arena.

22 dead, 59 hurt in blast at UK music gig

It was the deadliest attack in Britain since 2005.

Grande, a 23-year-old former child star, is not known for her political views and draws an audience of teenagers and pre-teenagers.

Grande was performing in Manchester during the European leg of her tour.

She is scheduled to perform at London's O2 arena on Thursday and then in Belgium, Poland and Germany in the coming weeks. It is not yet clear whether those concerts will still go ahead.

Other stars from across the globe have paid tribute to the victims of the deadly attack at Manchester Arena following Grande's gig.

Taking to Twitter, Taylor Swift, wrote: "My thoughts, prayers and tears for all those affected by the Manchester tragedy tonight. I'm sending all my love."

Nicki Minaj, tweeted: "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."

Former One Direction member Harry Styles responded on the social media site: "I'm heartbroken over what happened in Manchester tonight."

While, Bruno Mars responded with: "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."

Celebrities have been responding through the night to the tragic events, tweeting condolences and prayers.