( CNN ) -- The son of an Iranian woman facing imprisonment and possible execution by stoning has been told that Iranian authorities will contact him about his mother 's case Thursday , a human rights activist said Sunday . Mina Ahadi , chairwoman of the International Committee Against Stoning and Execution , said authorities contacted the son of Sakineh Mohammadi Ashtiani on Sunday . They did not specify the nature of the information he would receive on Thursday . Sakineh Mohammadi Ashtiani was convicted of adultery in 2006 , and was originally sentenced to death by stoning . Iranian authorities say the sentence has been put on hold , but there have been no reports as to whether a new sentence has been imposed . The 43-year-old mother of two is reportedly still being held held in Tabriz prison . Iran 's judiciary could reinstate her sentence of death by stoning , execute her by another means , or possibly even grant her a reprieve , according to human rights groups . Ashtiani 's attorney , Mohammad Mostafaei , told CNN earlier this month that his client confessed to the crime after being subjected to 99 lashes . He said she later recanted the confession and denied any wrongdoing . Mostafaei has gone into hiding since last weekend after being interrogated by Iranian authorities , human rights groups say . Advocates and Mostafaei say his wife and brother-in-law are being held by Iranian authorities . A letter believed to be written by Mostafaei was posted on the Internet on Saturday , calling for the release of his relatives . The lawyer says he has cooperated with interrogators , and says his wife and brother-in-law are victims of of `` hostage taking . '' Mostafaei said he and his family are innocent of any wrongdoing . CNN 's Gena Somra contributed to this report .
Sakineh Mohammadi Ashtiani was convicted of adultery in 2006 . The case sparked outrage among the country's conservative Muslim population, which has been under pressure to curb its growing influence on society. There have been no reports on whether a new sentence has been imposed .