Moscow ( CNN ) The primary suspect jailed in connection with the shooting death of Boris Nemtsov withdrew his confession Wednesday , saying he had been under duress during his admission and is n't guilty . Zaur Dadayev told two members of Russia 's human rights council that he pleaded guilty after being detained because he was scared . He told Eva Merkacheva and Andrey Babushkin he had been tortured and the well-being of his family and friends were threatened . Dadayev was one of two suspects recently charged in the case . Three other suspects have not been charged . Merkacheva and Babushkin were accused of `` interfering '' with the investigation and will be summoned for questioning over their motives , authorities said . Russia 's Investigative Committee stated that the two rights activists violated the law when they visited and questioned Dadayev in a Moscow jail . Amnesty International condemned the Russian officials ' decision to go after the activists , saying that a `` threat to bring criminal charges '' against the rights activists `` raises alarming questions over the fairness of the investigation . '' Anton Tsvetkov , the head of the Public Chamber 's commission for public security , said Dadyev and two other suspects denied being involved in the shooting of the Russian opposition leader . He said a doctor found no signs of torture during an examination of the three men . Shagit Gubashev and Anzor Gubashev had no bruises or wounds despite the fact they allege they were beaten by police , Tsvetkov said . Dadayev did have a cracked tooth and handcuff marks on his wrists . Nemtsov , one of President Vladimir Putin 's most outspoken critics , was shot in the back on a Moscow bridge as he walked with his girlfriend near the Kremlin in February 27 . The three suspects visited by Tsvetkov deny they are guilty and have appealed their arrests , he said . Putin has condemned Nemtsov 's killing and ordered three law enforcement agencies to investigate , the Kremlin has said . He also wrote to Nemtsov 's mother , saying he shared her grief , and promised to bring those behind the killing to justice . CNN 's Matthew Chance and Alla Eshchenko reported from Moscow , and Steve Almasy wrote from Atlanta . CNN 's Elwyn Lopez and Karen Smith contributed to this report .
Zaur Dadayev says he was tortured while he was in custody and , because he was scared , he confessed . Two other suspects reported they were tortured . The case is still ongoing but the government has said it will not release any more information until after a new trial takes place.