A scandal over sexual abuse in the foreign aid industry that began with Oxfam spread on Wednesday, as French group Doctors Without Borders revealed it had fired 19 staff last year for harassment or abuse.
The Paris-based group, known by its French acronym MSF, said it had received 146 complaints or alerts last year, of which 40 were found to be allegations of harassment or sexual assault.
It said in a statement that it had acted on 24 of these cases, firing 19 employees as a result.
With 40,000 staff around the world, MSF is one of the world's largest aid groups, best known for its work offering medical aid in conflict zones.
"Even though reports of abuse have steadily increased, MSF is aware that abuse goes under-reported," the charity said.
The revelations came as Oxfam grapples with allegations that it was not transparent about a scandal involving some of its staff for using prostitutes in Haiti following a devastating 2010 earthquake.
The scandal has led to the resignation of Oxfam's deputy head and has thrown into question British government funding for the charity, which amounted to around £32 million (36 million euros, $44 million) last year.
Britain warned on Wednesday it would cut off ties with foreign aid charities that cover up sex scandals.
An Oxfam spokeswoman on Wednesday said the aid agency had received 1,270 cancellations of donations by direct debit between Saturday and Monday -- compared to a normal monthly average of 600.
The allegations revolve around Oxfam's then head of mission in Haiti, Belgian national Roland van Hauwermeiren, whose behaviour had already led to complaints when he worked for the charity in Chad.
After resigning from Oxfam, he went on to work for French charity Action Against Hunger in Bangladesh.
There were reports on Wednesday that there had already been complaints about Van Hauwermeiren and his use of prostitutes when he was working for the British medical charity Merlin in Liberia before joining Oxfam.