Here's what Wikipedia has to say on the subject:
Capital punishment in Iran is legal, and can be executed in a number of ways, one of which has included stoning in the past. The Iranian judiciary has officially placed a moratorium on stoning, although the punishment remains on the books.[1]
In April 2002[7], the Iranian newspaper Entekhab reported that a woman called Ferdows B had been sentenced to 12 years' imprisonment, to be followed by death by stoning. Another woman who received a similar sentence was stoned to death in May 2001, after eight years in Tehran's Evin Prison. She had been convicted of adultery and corruption on earth.
In December 2005, Iran Focus reported a Tehran court's sentence of a woman to stoning in Varamin [8]. In the same report, Iran Focus reported the sentence of stoning on a man for armed robbery and murder in Nowshahr[8].
In June 2006, according to Iran Focus, a report about the stoning to death in May 2005 in Mashad of Mahboubeh Mohammadi, a teacher, and her sister's husband, both convicted of murdering Mahboubeh's husband, circulated on Persian-language websites.[9]. The stoning was allegedly carried out in the middle of the night in a cemetery.
In early July 2006, a report by ADN Kronos International[10] about the sentencing of Malak Ghorbany in Urmia to stoning for adultery started circulating widely in the internet[11] along with a petition against the sentence[12].
According to Amnesty International, Article 104 of the Iranian penal code states, with reference to the penalty for adultery: ...the stones should not be too large so that the person dies on being hit by one or two of them; they should not be so small either that they could not be defined as stones. Amnesty argues that this is clear evidence that "the punishment of stoning is designed to cause the victim grievous pain before death".[7]
In Iran, the convicted person to be killed is wrapped in a sheet and buried; male convicts are wrapped from the waist down, female convicts are wrapped till the chest to prevent the breasts from becoming exposed.
This was actually done in our 'ally', Pakistan. The tribal areas there are rife with Taliban, Al Qaeda, and the other fundemental jihadists. Their idea of a trial consists of someone in authority saying they broke the law, and then the punishment is carried out. No appeals, no jury, no 'due process'.