Kremlin seeks access to Nemtsov suspect

The Kremlin’s top rights adviser has demanded access to the prime suspect in the killing of opposition activist Boris Nemtsov, following allegations he was likely tortured into confessing.

Mikhail Fedotov, the head of the Kremlin’s human rights council, said on Friday that he was waiting for permission from investigators to visit the suspect, former Chechen police officer Zaur Dadayev.

Nemtsov, 55, an ex-deputy prime minister who became an outspoken critic of President Vladimir Putin, was shot four times in the back near the Kremlin on February 27 in the most shocking assassination of an opposition leader during Putin’s 15 years in power.

Dadayev allegedly signed a confession and was charged with the murder on Monday alongside Anzor Gubashev, who worked for a private security company. The two men and three other suspects were remanded in custody.

But on Thursday a member of the Kremlin’s rights council, Andrei Babushkin, said after a jail visit to Dadayev that the suspect now insists he is innocent, and may have confessed under torture.

‘‘We cannot confirm that he was tortured as we are not investigators, but we did find numerous wounds on his body,’’ Babushkin said.

Those allegations sparked a fierce reaction from Russia’s powerful Investigative Committee, which is probing the shooting. Both Babushkin and a journalist who spoke to Dadayev were questioned by investigators over possible interference in a criminal case.

Amnesty International said Babushkin’s claims raised ‘‘very serious questions about the fairness of these proceedings and fuels speculation about a possible state-sanctioned cover-up’’.

Nemtsov’s murder sent shock waves through the opposition, which accuses Putin of steadily suppressing dissent. Regime opponents also allege the Kremlin was behind the murder of one of its last outspoken critics.