Crankbrat ” has previous ” at his nursery he has also been the recipient of others attentions. It is normal development. The Nursery always informs us but never identifies a perpetrator . They deal very well with the incidents and try to ensure continuity of approach with parents.
It is hard to hear you child has been dragged off a toy by his hair but then one can place it in context by recalling that he has been the one who bit another. Crankbrat’s descriptions of a day’s events often only have a passing similarity to my own recollections.
Relax trust your Nursery like you they cannot be eyes on your child 100% of the time. If the offender starts to target your daughter then get a meeting with the staff to ensure they get a plan of action.
Cranbrat was specifically invited to the birthday party of the girl who pointed him out to her mum with the line “that’s crankbrat he’s naughty ”