Parents in Borough Park are on high alert after they say they received a letter about a man acting inappropriately in front of P.S. 131.

The school sent home a letter to parents, saying the incidents happened during morning arrival last Thursday.

According to the letter, a female student said a strange man was looking at her in an inappropriate way and made her feel uncomfortable. In a second incident, a student claims they were approached and spoken to by a man.

Officials say both students were unharmed.

The NYPD has been notified, but many parents in the neighborhood say they haven't seen an increased police or security presence.