WASHINGTON (WUSA9) -- Parents in one part of Northwest, D.C. are on edge this week, after police said a man exposed himself, directly across the street from an elementary school.

According to police, a man broke into a vacant home on Broad Branch Road on Tuesday, and went to the second floor, before exposing himself through the window to three girls passing by.

Although the three young girls involved were not DCPS students, the incident took place directly across the street from the Lafayette Elementary School.

"I think it's disturbing..." said father Todd Goldwasser, who was in the area at the time.

"You hope it doesn't happen to any children obviously."

Police have not made any arrests, but said the incident took place at approximately 5:20 p.m. on Tuesday. Police said that the flasher "knocked on the window" to get the girls' attention. The three reported seeing a man with a "round belly and no clothes on."

The property owner said that the home is under construction, and so it was vacant at the time of the incident. He said that the flasher broke into his home in order to do the flashing.

Police said this is the second incident of flashing this month in that neighborhood. On October 4, a woman was walking home on the 6100 block of Western Avenue NW, when a beige 4-door vehicle "pulled next to her and honked his horn."

After whistling, the driver then "raised his body of the seat and purposely exposed himself."

"Since it's happened now for a second time," said Mark Wellborn, a father of a student at Lafayette.

"It's certainly more concerning than when I initially heard about it."

Since the incident, the homeowner said that he has covered up all entry-ways and windows to try and keep trespassers away.

Parents at Lafayette Elementary School told WUSA9 that the school sent out a letter in order to make parents aware of the incident, despite the fact that no students have been involved in the incident.