Ariana Grande met families of those who died in the terror attack on her show at the Manchester Arena when she returned to the city ahead of Sunday's tribute concert.

The US pop star met some of those who lost loved ones at an undisclosed location on Friday, including the mother of Martyn Hett, 29, and 19-year-old Courtney Boyle.

Martyn's brother Dan tweeted a photo of his family with the 23-year-old star.

He said: "Endless respect to Ariana Grande for coming back to our city and meeting my family and so many others."

The singer had earlier surprised youngsters injured in the attack by visiting them in hospital

She sat at the bedside of children at the Royal Manchester Children's Hospital who are still recovering from the suicide bombing, which killed 22 people.

Grande had arrived into the UK at Stansted Airport on Friday ahead of the tribute gig for the victims on Sunday.