PORTLAND, OR (KPTV) -

A burglar snuck into a north Portland home through an open bedroom window and tried to sexually assault a 6-year-old girl early Sunday morning, police said.

Portland police said Pedro Santiago Machi-Menchu, of Vancouver, entered the home on North Nashton Street just before 1 a.m.

Kyler Pulfrey, 21, lives at the home and went to check on three children staying there. He found Machi-Menchu attempting to sexually abuse the girl, police said.

Pulfrey told police he pulled Machi-Menchu off the girl and a struggle ensued, officers said. He eventually dragged Machi-Menchu into the living room as another resident called 911.

Officers rushed to the home and found Pulfrey detaining Machi-Menchu.

Child abuse detectives then launched an investigation and ultimately arrested Machi-Menchu, 21, on charges of first-degree burglary and first-degree attempted sex abuse. Once he was treated for injuries at a Portland hospital, he was booked into the Multnomah County Jail.

The young victim does not live at the north Portland home, but she is the goddaughter of someone who lives there.

Police described stranger-to-stranger assaults like this one as "extremely rare."