Barely 48 hours after they attacked a concert hall in Moscow, four men accused if killing more than 130 people appeared before a Moscow court Sunday showing signs of severe beatings as they faced formal terrorism charges.

One appeared to be barely conscious during the hearing.

A court statement said two of the suspects accepted their guilt in the assault after being charged in the preliminary hearing, though the men’s condition raised questions about whether they were speaking freely.

There had been earlier conflicting reports in Russian media outlets that said three or all four men admitted culpability.

Moscow’s Basmanny District Court formally charged Dalerdzhon Mirzoyev, 32; Saidakrami Rachabalizoda, 30; Shamsidin Fariduni, 25; and Mukhammadsobir Faizov, 19, with committing a group terrorist attack resulting in the death of others. The offense carries a maximum sentence of life imprisonment.

The court ordered that the men, all of whom are citizens of Tajikistan, be held in pre-trial custody until May 22.

Russian media had reported that the men were tortured during interrogation by the security services, and Mirzoyev, Rachabalizoda and Fariduni showed signs of heavy bruising, including swollen faces,

Rachabalizoda also had a heavily bandaged ear. Russian media said Saturday that one of the suspects had his ear cut off during interrogation. The Associated Press couldn’t verify the report or the videos purporting to show this.

The fourth suspect, Faizov, was brought to court from a hospital in a wheelchair and sat with his eyes closed throughout the proceedings. He was attended by medics while in court, where he wore a hospital gown and trousers and was seen with multiple cuts.

Court officials said Mirzoyev and Rachabalizoda admitted guilt for the attack after being charged.

The hearing came as Russia observed a national day of mourning for the attack Friday on the suburban Crocus City Hall concert venue that killed at least 137 people.

The attack, which has been claimed by an affiliate of the Islamic State group, is the deadliest on Russian soil in years.

Russian authorities arrested the four suspected attackers Saturday, with seven more people detained on suspicion of involvement in the attack, Russian President Vladimir Putin said in an address to the nation Saturday night. He claimed they were captured while fleeing to Ukraine, something that Kyiv firmly denied.

Events at cultural institutions were canceled Sunday, flags were lowered to half staff and television entertainment and advertising were suspended, according to state news agency RIA Novosti. A steady stream of people added to a makeshift memorial near the burned-out concert hall, creating a huge mound of flowers.

“People came to a concert, some people came to relax with their families, and any one of us could have been in that situation. And I want to express my condolences to all the families that were affected here and I want to pay tribute to these people,” Andrey Kondakov, one of the mourners who came to lay flowers at the memorial.

Putin has always said there was no pardon for terrorists. That government would send them to God who would decide whether to forgive them or not.