A desperate Syrian refugee was forced to sell his kidney to pay for passage to Europe, a Serbian aid worker said.
The daring operation took place in a backstreet in Lebanon, with the victim going 20 days without proper medical care.
Alina, a Belgrade-based anti-trafficking organisation, said he refused treatment and opted to travel on with only painkillers.
Aid worker Naser Amro said: “He sold his kidney to get money to travel. He said he had pain and problems so we intervened to get him to medical help.
“After talking with the individual he told us his story.”
However, Mr Amro said he was not in a life-threatening condition.
“It was a 20-day-old operation and it was not done the proper way of course. He was suffering from pain and he was provided with painkillers.
“He did not want to stay, he wanted to continue his journey, he was already on the border with Croatia.”
A separate aid organisation confirmed the United Nations High Commission for Refugees is aware of the case.
Alina claims it had no evidence of traffickers operating in Serbia, saying they tend to congregate around the sea crossing from Turkey to Greece.
Mr Amro said: “Two weeks ago two Afghan girls were sexually exploited. A man from the UNHCR provided them with support.
“There is a point in Turkey which the refugees reach and there is no going back.
“If they want to step back and not travel at night on water they cannot.”
Jack Fenwick (express.co.uk)