The ANC Youth League on Thursday described the controversial landing of a Gupta family aircraft at Waterkloof Air Force Base in Pretoria as an "invasion of the country".
It joined a chorus of political parties and organisations which condemned what has been dubbed "Guptagate".
"We seek answers from the ANC-led government on how it is that national security was breached in such a callous manner, disrespecting the people and laws of our country," the league said in a statement.
The ANCYL commended President Jacob Zuma for not attending the wedding.
"We call upon all progressive South Africans, particularly ANC leaders and deployees in government who were invited to the wedding to follow President Zuma's example, as their attendance will be viewed as condoning this security breach."
The league said this was a case of gross negligence and misconduct. Those responsible should be exposed, dismissed, arrested and prosecuted.
"We join the African National Congress in calling for an explanation on this matter and for heads to roll for those who allowed that plane to land at our military base, a national key point."
02/04/13 Times Live, South Africa