Nick Carter remembers his "little brother" Aaron Carter: "My heart is broken"

• Condolences Hilary Duff and other celebrities say goodbye to Aaron Carter: "My teenage self loved you"

• Singer Aaron Carter found dead at his home

A day after singer

, 34, was found dead at his Southern California home,

member

has remembered his younger brother

In an Instagram post with photos of the two through the years, Nick Carter has said that his "heart is broken" following the death of the youngest of the five Carter brothers, whom he called his "little brother".

"My heart has broken today," he writes.

"Even though my brother and I have had a complicated relationship,

. I've always held on to the hope that somehow, someday, I'd want to walk a healthy path and eventually find help." that I so desperately needed," he begins by pointing out.

"Sometimes we want to blame someone or something for a loss. But the truth is that

," the post adds.

"I will miss my brother more than anyone will ever know. I love you Chizz,

here on earth. God please take care of my little brother."

View this post on Instagram

Carter has struggled with substance abuse and mental health

Police responded to Aaron Carter's home around 11 a.m. Saturday after receiving reports of a medical emergency.

Authorities later said that a caretaker had found him in the bathtub and that resuscitation efforts were unsuccessful.

Carter has struggled with

and mental health.

In 2017, he attended rehab and was arrested on suspicion of driving under the influence of marijuana.

In 2019, Carter said on an episode of the talk show

that he

.

That same year, Nick and his sister, Angel, said they filed a restraining order against Aaron.

In September, Carter checked into rehab for the fifth time in hopes of regaining custody of their young son, Prince, with fiancée Melanie Martin.

At the time, Prince was in the care of Martin's mother by court order.

Aaron Carter's career

Aaron Carter

, singer, rapper, and actor,

, the same year their gold-selling debut album was released.

He went triple platinum with his second album, 2000's "Aaron's Party (Come Get It)," which spawned hit singles like the title track "

. "

Carter's acting credits include the television series "

and an appearance on

.

In 2006 he starred, alongside his brother Nick and his brothers BJ, Leslie and Angel Carter, in the unscripted series of E!

.

Conforms to The Trust Project criteria

Know more