Lisa Vanderpump is in mourning.
According to The Daily Mail, the long-time Bravo star's brother, Mark Vanderpump, was found dead at his home in Gloucestershire, England on April 30.
He was 59 years old.
The aforementioned British newspaper explains that Mark worked as a DJ and that his death is believed to be the result of a drug overdose.
As of this writing, it's unclear whether this overdose was accidental or deliberate.
This awful news has only just gone public, but it explains why Lisa has not been updating her social media page or making any statements of late.
In a statement released to DailyMail.com, Vanderpump says the tragedy is a "shock to us all," adding that she last had contact with her sibling the day before he died.
Scroll down for a look at Lisa's full statement:
This has come as a shock to us all. My brother and I had connected the day before this tragedy and I was completely unprepared for this.
He was my only sibling and I am shocked and saddened by his passing.
I am trying to be supportive to his two young sons that he has left behind, and help them get through this tragedy.
We appreciate your consideration in this private and extremely difficult family time.
Lisa and Mark often vacationed together, while the latter was a frequent visitor to his sister's Los Angeles restaurants Sur, Villa Blanca and PUMP.
Below, for example, the loved ones are seen together in August of 2014.
We don't wish to speculate wildly and we certainly don't want to speak ill the dead, but Mark's 22-year marriage ended in divorce.
He appeared on some kind of reality show titled "Gold Diggers and Proud" and was living a "very colorful life until it all sadly went wrong," an anonymous insider tells The Daily Mail.
This same source says Mark had his share of legal troubles, the details of which are not really known at this time.
Lisa Vanderpump, meanwhile, has been a cast member on The Real Housewives of Beverly Hills since 2010.
She also stars in a spinoff, Vanderpump Rules, which features her West Hollywood restaurant Sur and its employees.
The 57-year-old is also famous for her philanthropy, having founded the Vanderpump Dog Foundation to help fight the sale of dogs for meat.
No one associated with either of Vanderpump's Bravo programs has spoken out yet on this awful development.
We'll update this post with more information as news breaks.
For now, however, we simply send our condolences to Lisa Vanderpump and her relatives.
May Mark rest in peace.