Two Scottish girls are among those missing after the terrorist attack at the Ariana Grande concert in Manchester.

Friends Eilidh MacLeod and Laura MacIntyre travelled to the concert at the Manchester Arena from Barra in the Western Isles.

Greater Manchester Police confirmed 22 people, including children, were killed in the explosion and at least 59 have been injured.

Eilidh's family have said there has been no contact since the explosion at around 10.30pm on Monday. She is 14 and it is understood her mother was at the venue to pick her up. It is believed her mother Marion is still searching for her.

Laura's father Michael MacIntyre took to Twitter on Tuesday morning to appeal for information to track down the teenager.

He posted on Twitter: "Please...please re-tweet. Looking for my daughter and her friend, Laura Macintyre and Eilidh Macleod #manchesterattack".

Mr MacIntyre has since flown to Manchester as the relatives of both girls anxiously wait for news.

Eilidh's aunt Margaret MacNeil posted on Facebook: "My niece and her friend were at the Ariana Grande concert tonight and there has been no contact since the explosion.

"Please let us find the girls safe and well."

A dedicated helpline for relatives of those unaccounted for after the incident has been established on 0800 096 0095, while appeals for information have been made on social media using #missinginmanchester.

Police confirmed a lone attacker detonated an improvised explosive device, in what is believed to be the worst terror attack on British soil since 56 people were killed in the 7/7 London bombings in 2005.

First Minister Nicola Sturgeon said her "thoughts are with the victims" of the atrocity, while she confirmed four people attended Scottish hospitals after going to the concert. She confirmed two of those injured had subsequently been released.

Scots caught up in the terror attack have been speaking to STV News.

Jamie Brown, 27, from Aberdeen said: "The concert had finished and we were just leaving. We got out the door, turned right and went to head towards the exit and right in front of us - maybe 50m away - we saw an explosion, a massive bright spark and smoke.

"There were so many kids around, it was just horrific. We turned around and ran for our lives, it was absolute chaos.

"Everyone was pushing and I had to turn and calm complete strangers down so we didn't get hurt. I was with my mum, my sister and her friend and my main priority was to keep them safe."

Glasgow teenager Christoper Smith, who was with his boyfriend Conor McCormick at the concert, was also caught up in the carnage which ensued following the blast.

The 18-year-old said: "She [Ariana Grande] had just finished her last song - Dangerous Woman - when the lights came up and people started getting up to leave.

"Two or three minutes after she went off stage the explosion was heard. My boyfriend and I were making our way towards the exit when we heard it.

"There was a slight silence for about three seconds before fans from the upper tier screamed and everyone started running."

Ariana Grande took to social media to share her devastation at the events which unfolded during the ending of her arena gig.

She said on Twitter: "Broken. From the bottom of my heart, I am so so sorry. I don't have words."

In response to the bombing, vigils will be held across the UK on Tuesday, including at Albert Square in Manchester and outside St Ann's Church.

One such event took place in George Square on Tuesday evening, with many leaving floral tributes for the victims.