Photos: Busted: Kim Kardashian's bro, Rob Kardashian seen taking drugs with a friend

Rumours of his drug use have swirled for months.

And now Rob Kardashian has reignited concerns for his well-being after he was pictured hanging out with friends 'smoking marijuana' and surrounded by what appears to be cups containing Sizzurp, a combination of codeine-packed cough syrup and soda.

In the pictures below, taken a few days ago, the 27-year-old can be seen exhaling smoke and passing what appeared to be a suspicions-looking cigarette to a friend.

The reality star is also seen sitting with a double cup, the drinking vessels favoured by Sizzurp drinkers.

One is even emblazoned with the words Codeine Boys, while another clear plastic cup holds the remnants of a purple liquid, the colour of Sizzurp, which is also known as Purple Drank.

A source says, clan Kardashian has been calling around rehab facilities on his behalf, although Rob still refuses to go.

'He feels completely estranged from his sisters and family,' another source added. 'He really isn’t in a good place.'

                                                      

Rob was pictured with SipLean Codeine Boys Styrofoam cups, which are popular with Sizzurp users AND bottles of prescription-strength Promethazine Hydrochloride and Codeine Phosphate syrup.