Police in the Russian capital Moscow have arrested a woman on suspicion of murdering a child after she was found apparently carrying a severed head, BBC reported.
The woman, believed to be the victim's nanny, is suspected of killing the child before setting fire to its parents' apartment.
CCTV appears to show the woman, dressed in a hijab, walking near a metro station with a head in her hands.
A police officer intercepts and wrestles her to the ground.
The suspect has been placed in psychiatric care to determine whether she is capable of understanding her actions, the Moscow Investigative Committee said in a statement (in Russian).
A criminal investigation was launched after the discovery of the remains of a child aged three to four, whose body bore traces of a violent death, in a charred flat on Narodnoye Opolcheniye Street in north-western Moscow, it added.
"According to preliminary information, the child's nanny, a citizen of one of the Central Asian states born in 1977, waited for the parents and elder child to leave the flat and then, for reasons not established, murdered the infant, set fire to the flat and left the scene," it added in the statement.