(aljazeera) -- Stephane Dujarric, UN Secretary-General Antonio Guterras' spokesman, said on Friday he had seen media reports that four Arab countries accused three Qatar-based charities of being involved in "terrorism".

Qatar Charity, Qatar's largest NGO, has worked extensively with the UNHCR, UNICEF, the World Food Programme, Oxfam, CARE, and USAID.

The Sheikh Eid Al-Thani Charity Foundation and the Sheikh Thani Bin Abdullah Foundation for humanitarian services were also blacklisted by Saudi Arabia, the UAE, Egypt, and Bahrain late on Thursday.

"The UN is bound only by the sanctions lists put together by UN organs such as the Security Council. We're not bound by any other lists," Dujarric said.

"The Office for the Coordination of Humanitarian Affairs has over the years built strong partnerships with these organisations based on shared humanitarian principles, which are strictly non-political," he added.

The Qatari government rejected allegations of supporting individuals and groups blacklisted as "terrorists" after the four countries cut ties with Doha amid a major diplomatic crisis.