British pop star Katy B has shared an emotional tribute to her brother following his death over the weekend (13-14Sep14).

The singer's sibling Andrew had been left brain-damaged and paralysed following an accident 18 months ago, and he passed away on Saturday (13Sep14) after suffering a cardiac arrest.

The Lights On hitmaker posted a picture of Andrew as a child on her Instagram.com page, and remembered her beloved brother in a touching message.

She writes, "The most beautiful soul I ever knew passed away. He had a cardiac arrest and his heart stopped. I am still in total and utter shock. My one and only brother Andrew Brien did not deserve to die this young... Andrew had previously had an accident which left him severely brain damaged to the point of being completely paralysed, not being able to talk or move or do anything for him self (sic), almost like a coma state, anyone who knows someone with brain injury will tell you how devastating it is, grieving and missing someone who is still alive.

"I guess he had finally thought f**k this, he is now free of pain and doctors and medication and can now look over all of us, having a good chuckle as he always did... Thank you to his kind kind friends that have come to visit and have raised money for the causes supporting his condition, we are so so grateful, I know we are all so thankful to have known him, I would give anything to have him back here again, but now we must honour his life, hopefully one day my heart will heal."