South Africa’s Foreign Ministry and Home Affairs Ministry, and the Iranian embassy in Pretoria, did not immediately respond to the Israeli allegations.
The two women arrived in the capital via Dubai in a commercial flight and are expected to leave soon after the meeting where they will be accompanied by Singh.
Trump's decision on December 6 to recognize Jerusalem as Israel's capital broke with international consensus and unleashed protests across the Muslim world, prompting a flurry of appeals to the United Nations.
It also called on the UN to "end the Israeli occupation" of Palestine and declared US President Donald Trump's administration liable for "all the consequences of not retracting from this illegal decision".