Procurement for aspects of the Syrian aid programme operated by Irish charity GOAL have been suspended.
The organisation confirmed it is co-operating with an investigation by the US Inspector General into "alleged supply chain irregularities" relating to US-sponsored aid programmes in Syria.
Chief executive of GOAL Barry Andrews has said a suspension is in place in regard to procurement of food and non-food items from Turkey for the GOAL Syria programme.
Speaking on RTÉ's Morning Ireland, he said: "It is not a suspension of funding. It is a suspension of procurement only."
He said the charity is also carrying out an internal investigation to find out "whatever shortcomings, vulnerabilities, deficits we have in our procurement process".
"This involves multi-parties. There's an awful lot of organisations and suppliers involves in this situation. And GOAL is one of them," Mr Andrews said.
The charity said its "remaining ongoing and urgent humanitarian relief effort" in Syria is continuing, which is the largest in GOAL's history.
The Department of Foreign Affairs said the matter is "a cause for serious concern".
"We have this morning demanded as a matter of urgency a detailed report from GOAL on the overall situation and on any implications for Irish Aid funding."
Meanwhile over 100 people have died in the Syrian city of Aleppo over the past seven days according to the Syrian Observatory for Human Rights.
