Mariah Carey allegedly cut her ties with her family a long time ago, including her older sister Alison, who was arrested on prostitution charges last week.

Mariah’s older brother, Morgan, who hasn’t spoken with the singer in six years, told Inside Edition that “Mariah doesn't care about anyone other than herself, and it’s always been that way.”

Morgan — who was once very close with the songstress until they found themselves in a very nasty rift several years back — decided to speak with the news outlet because he’s upset that the “Hero” hitmaker refuses to help Allison even after the latter recorded a desperate public plea for help in March.

Although Mariah’s publicist said in a statement that the Grammy-winning recording artist “has spent hundreds of thousands of dollars supporting Alison and her children” through the years, Morgan believes that she’s doing it the wrong way.

“Yeah, she had given a heroin addict money in the past,” Morgan said. “But is that helpful? You can’t put large sums of cash into the hands of a drug addict.”

When asked what it is he’s asking from Mariah today, the 51-year-old model and music producer told Inside Edition: “Let’s make sure that Allison’s needs are met, but not in a way that she’s enable so she could go off and do damage to herself.”

According to the New York Daily News, Alison was arrested on Friday, Aug. 26, at a Howard Johnson hotel after an undercover cop posing as a customer responded to her online ad soliciting sex.

“I’m a pretty lady looking for guys... with me it's such a sweet, sweet fantasy baby!” read a portion of the ad, which is actually a reference to Mariah’s 1995 hit “Fantasy.”

The Daily Freeman reported that Alison pleaded not guilty on Wednesday, Sept. 1, to a single charge of prostitution.