School officials say there were three incidents in stairwells at PS 89 in Elmhurst yesterday, and it is raising security concerns, since the man is also believed to have made his way into the school last week.
Police believe the intruder gained access to the school through an unlocked door.
Police say two groups of students, each consisting of a boy and a girl, told authorities they ran into a man on one of the school's stairwells and he sexually abused three of them. A third group, two girls, said one of them was sexually abused by the man in another stairwell. The children, who range in age from 6 to 8, were running errands for their teachers, such as taking the attendance sheets down to the main office. The victims were taken to a hospital for observation, and treatment for emotional trauma. To make matters worse, it became clear yesterday that the school failed to notify parents last week after an incident involving a young girl.