A new campaign is being launched calling on the UN to push for the immediate arrest of two men accused of war crimes in Sudan's Darfur region.
Minister Ahmed Haroun was named as a suspect a year ago
Some 45 organisations have signed up to the Wanted for War Crimes campaign.
The International Criminal Court named Humanitarian Affairs Minister Ahmed Haroun and militia leader Ali Kushayb as suspects a year ago.
Sudan's envoy to the UN called the campaign politically motivated and said the men would never be handed over.
The Wanted for War Crimes campaign wants the United Nations Security Council to push for the immediate arrest of the two named suspects.
In charge of Darfur in 2003 and 2004 as deputy interior minister
ICC says his work included recruiting, funding and personally arming Janjaweed militia
As humanitarian affairs minister he oversees Darfur's two million refugees
Aid agencies accuse of him of hindering their efforts to access the displaced
Known as "colonel of colonels"
Commanded thousands of Janjaweed in mid-2003
Allegedly promoted and witnessed rape and torture as part of the war strategy
The government says he has been in detention since November for Darfur attacks
They are also calling on the UN to apply targeted sanctions - such as freezing assets - on those in the Sudanese capital, Khartoum, who continue to harbour them.
The campaign has issued wanted posters and is calling on people to send protest emails to the United Nations.
Speaking to the BBC, Ambassador Abdalmahmood Abdalhaleem Mohamad said the campaign was "a vicious campaign. There is nothing new in it".
He said the campaign "means nothing for us, because we have always been saying that we will never hand over any of the Sudanese to be tried outside Sudan and we are not going to pay any attention to this call."
He said the judicial system in Sudan was "more capable of trying whoever has committed any crimes in Darfur".
Campaigners were horrified when a committee headed by Ahmed Haroun was chosen to investigate human rights abuses in Darfur at the end of last year.