Nick Carter broke down in tears as the Backstreet Boys paid tribute to his brother Aaron at a concert in London on Sunday.

Amid cheers and applause, a photo of Nick's younger brother appeared on a huge LED screen above the stage at the O2 Arena. Members of the band could be seen wiping tears away before Kevin Richardson said, "Thank you so much. That was the latest and very last single off from the 'DNA' album and that song is very special to us because that song is about family."

One by one, members hugged a tearful Nick as Richardson continued, "We have been through highs and low, ups and downs. Thank you for being a part of the Backstreet family for 29 years. It's very hard to hear these words 'cause we lost one of our family members yesterday. We just wanna find that moment in our show to recognize him."

A Twitter user uploaded the emotional moment and wrote, "Not a dry eye in the arena."

One person applauded Nick's professionalism and wrote, "These boys will always have my heart. I don't know how Nick managed to do what he did tonight, but it must've taken a huge amount of strength."

Another fan described the outpouring of support for Nick during the show and tweeted, "The love for him tonight was unreal! London showed the love! The emotion in @theo2 was real, the tribute to #AaronCarter was so touching. What a night."

Aaron, 34, was found unresponsive at his home in Lancaster, California, on Saturday. TMZ said Aaron's house sitter made a 911 call at 11 a.m. Saturday after finding the rapper's body in a bathtub. The cause of death is yet to be revealed.

Later in the day, Aaron's fiancée, Melanie Martin, was photographed sobbing outside the "I Want Candy" singer's home. She told TMZ, "My fiancé Aaron Carter has passed away. I love Aaron with all my heart and it's going to be a journey to raise a son without a father."

Aaron's twin sister, Angel, also posted a tribute to Nick on her Instagram page Sunday. "To my twin... I loved you beyond measure. I know you're at peace now," Angel wrote while sharing photos of her and Aaron as babies and toddlers.

Meanwhile, producers Morgan Matthews and John Wyatt Johnson decided to release Aaron's last album "Blacklisted" on Sunday - a month earlier than its original release as a tribute to the late musician.

backstreet new album
The Backstreet Boys, who performed at KTUphoria on June 16, 2018 in Wantagh City, released a new album on Friday. Nicholas Hunt/Getty Images for 103.5 KTU