School officials in Jersey City are reporting an unwanted visitor.

District Spokeswoman Paula Christen says a squirrel managed to sneak into a basement classroom through a window screen and jump on some children.

Christen says no one was injured but some second-graders at the James F. Murray No. 38 school were frightened when the animal jumped on them.

Christen says the animal landed on one child's head, one's hand and another one's shoulder.

One of the students was 7-year-old Tyhee, whose father told The Jersey Journal the squirrel "just pounced on his head real hard," leaving the boy "shaken up."

Students upset by the incident were allowed to be picked up early by their parents.

Christen says the children were evacuated from the classroom and custodians managed to corner the animal and get him back outside.

A Liberty Science Center animal husbandry staff member told the newspaper that squirrels "very, very rarely transmit" any sort of disease to humans.