Police say he was snapping pictures of the women through a hole he cut in the side and now he is facing charges.
"That's unheard of," said Tom Dessellia, who lives nearby. "This is a good section of town nothing like this happens."
It is a crime that's out of this ballpark. What took place in the port-a-potty has everyone shaking their heads and helmets.
"Candy Cane Park is a place where my four daughters and my grand kids play," said Paul Tait who lives nearby. "It's quite shocking."
Police say the suspect cut holes through the sides of the bathrooms then would take pictures of the women using them. He apparently did homework at some nearby tables and would strike when he saw the women go in.
"It is so bizarre, it's hard to comprehend," Tait said. "The good news is our police department continued their good work as we expect and they made an arrest."
Investigators caught the 28-year old man with the help of some parents who were on the defense. They saw the suspect up to no good and took pictures and video of him.
They tried to chase him down to no avail.
"We don't have anything like that around here," Dessellia said. "It's quiet. It is a good mixture of young and old. Everyone watched out for everyone."
A game plan that seemed to have worked - police turned the case over to the Washtenaw County Prosecutor's Office. The Ypsilanti man will likely be arraigned over the weekend.
As for the port-a-potties, one was removed and the other moved to a more public spot under the score board. The hole is now covered with tape until the restroom can be replaced.
No one from the Ypsi-Arbor Little League wanted to go on camera but in a statement they did say they are happy the suspect is in custody and a lot of that has to do with the quick thinking of parents and coaches.
The statement goes on to say that it remains committed to the safety of its players and spectators.