"The citizen of Uzbekistan worked as a nanny illegally. She was allowed [by the parents] to work without a permit," the head of the Moscow Migration Service department, Olga Kirillova, told RIA Novosti.
According to Kirillova, Bobokulova arrived in Moscow in late January, at which time she registered with the FMS.
Kirillova stressed that the FMS has repeatedly called on individuals and companies to only hire migrant workers who have a work permit, as the procedure to obtain such documents includes medical tests, particularly for drug abuse and mental health.
The motive for the attack is still unknown. The nanny is reportedly mentally unstable.