Gulchekhra Bobokulova, a 38-year-old mother of three, spoke to reporters on her way into a Moscow court, the BBC wrote.

Bobokulova, a Muslim and a citizen of Uzbekistan, also replied "yes" when asked if she accepted her guilt.

Видео дня

CCTV appeared to show her, dressed in a hijab, walking near a metro station with a head in her hands.

Russian media reported that she pulled the head out of a bag and began screaming that she would blow herself up after a police officer asked to see her identity documents.

Amateur video posted online showed a black-clad woman shouting "I am a terrorist. I am your death."

Investigators told the Presnensky district court they had not found anyone else involved in the case.

But prosecutors also said they believed that Bobokulova had been "incited" to commit the crime.

Russian officials have said Bobokulova was suffering from mental health problems.

Investigators believe she waited for the four-year-old girl's parents to leave the home before killing her, setting the apartment on fire and fleeing, the Moscow Times reported.

Moscow residents have left flowers and children's toys outside the Oktyabrskoye Polye metro station, where Bobokulova was arrested, and outside the murdered child's home.

Uzbekistan, which like other Central Asian states has a Muslim majority, has long supplied migrant labor for the Russian capital.