A woman wielding a knife attacked a female teacher Tuesday morning at the gate of a kindergarten in Tokyo's Suginami Ward, police said.

Police said the woman, aged around 50, attempted to enter Takachiho Kindergarten at around 8:15 a.m. and stabbed the teacher, 23, in both shoulders and the left leg. There were no children nearby at the time of the attack.

The woman fled after the assault, police said.