"It's concerning, definitely," said North End resident Fairlee Frey. "Not something you want to hear about in your hometown and close neighborhood."
"I'm a little shocked," said Dusty Rhodes, another Norther Ender. "This is a pretty nice neighborhood."
Police say a woman told them she was returning home early in the morning on Wednesday, around 2 a.m., when a man confronted her and pushed her through the front door of her house then sexually assaulted her inside the home.
Police are releasing few details to the media, saying the investigation is "very preliminary".
But police are urging women in the area to use caution
"Be observant, know who you're with, and who is around you at all times," said Tuckie Shaver, coordinator of the Boise Police Department's crime prevention program. "Also be aware of your gut feeling, and the red flags that may be surrounding you. Your gut feeling is always right, it's your best defense."
Just last year, investigators believe one man went into five different homes in the North End.
In some of the cases, women woke up to find the stranger in their bedrooms.
In other cases, he fondled his female victims.
Detectives aren't saying if they think it's the same man who is striking again.