Sakineh Mohammadi Ashtiani, whose stoning sentence has provoked international outrage, apparently confessed to adultery and talked about her husband’s killing in an Iranian state television interview broadcast on Wednesday.

Britain’s Foreign Office said on Thursday it was appalled by the televised confession and concerned by an allegation by a lawyer for Ashtiani that the confession was a result of torture.

“We have urged the Iranian authorities to undertake a thorough review of her case and call on them to comply with the international human rights obligations they have independently signed up to,” it said in a statement.

Human rights group Amnesty said televised “confessions” had repeatedly been used by Iranian authorities. Many of the accused had later retracted the confessions, stating they had been coerced to make them, sometimes by torture, it said.

“It appears that Iran’s authorities have orchestrated this ‘confession’, following the call for a judicial review and now appear to be inventing new charges of murdering her husband,” said Hassiba Hadj Sahraoui, deputy director of Amnesty International’s Middle East and North Africa programme.

“Statements made in such televised exchanges should have no bearing on Iran’s legal system, or the call to review her case. This latest video shows nothing more than the lack of evidence against Sakineh Ashtiani.” Ashtiani, a mother of two, has received 99 lashes for having illicit relationships with two men. The stoning sentence has been suspended pending a judicial review but could still be carried out, an Iranian judiciary official has said.

Amnesty said it understood a lawyer for Ashtiani had submitted a request for a judicial review of her case last week and a response was expected about Aug. 15.