A nursery school teacher is under criminal investigation after harrowing CCTV footage showed her 'beating two year old children' in her care.

The teacher - named as Zhanel Musken, 29 - hit and slapped the infants, pulled their hair, shook and pushed them, and roughly changed their clothes, it is alleged.

A total of 15 suffered injuries, revealed Saule Shakeneva, the regional children's rights commissioner in Pavlodar, Kazakhstan.

'The number of children may well increase,' she warned.

The teacher was suspended after distraught parents complained to police.