Nick Carter pays tribute to his brother Aaron Carter

The world is mourning the loss of Aaron Carter. 

His tragic death has saddened many fans and of course his family. 

Nick Carter, Aaron's older brother and Backstreet Boys member, was on tour when he found out the news.

During the Backstreet Boys' concert at the O2 Arena in London on Sunday, 6th November the singer was visually emotional as he and his bandmates paid tribute to the late musician onstage.

As seen in videos shared to social media, a big screen showed in memoriam images of Aaron during a performance of the boy band's latest single "No Place," which member Kevin Richardson explained, "is very special to us because that song is about family."

"Everybody in here, we all grew up together," the singer told the crowd, as Nick stood beside him in tears. "We've been through highs and lows and ups and downs—we thank you for being with the Backstreet family for 29 years, for all the love."

He continued, "Tonight we've got a little bit of heavy hearts. Because we lost one of our family members yesterday. We just wanted to find a moment in our show to recognize him."

Nick also shared a tribute to his brother on social media:

"My heart is broken. Even though my brother and I have had a complicated relationship, my love for him has never ever faded. I have always held on to the hope that he would somehow, someday want to walk a healthy path and eventually find the help that he so desperately needed. Sometimes we want to blame someone or something for a loss, but the truth is that addiction and mental illness is the real villain here. I will miss my brother more than anyone will ever know. I love you Chizz. Now you can finally have the peace you could never find here on earth….I love you baby brother." 

RIP Aaron Carter.