It happened Thursday morning in the 800-block of South East Avenue.
Mailman Pedro Gurrola was apparently leaving the home early Thursday morning on the way to work when he was attacked inside his garage.
Oak Park residents were rattled Thursday afternoon after hearing that 41-year-old Gurrola was found dead inside of his garage. Police are emphasizing to the residents who live in the area that they do not believe this was a random crime.
"We're calling it a homicide investigation," said Chief Rick Tanksley, Oak Park Police Dept.
Police say Gurrola's wife found her husband about 10 a.m. She called police, and they resounded to the 800-block of South East Avenue, where they spent all afternoon.
Police say Gurrola apparently left for work at about 6:45 a.m.
"We have two leads, which leads us to believe that this was not a random act," Tanksley said.
Police say Gurrola's car is now missing too. It's a 1997 Chevy Lumina, four doors, and red or maroon in color. The Illinois license plate is 8479360.
It is a disturbing crime for neighbors in the area.
"It's tragic. Senseless. I hope they catch whomever did it," said Mike Solomon, Oak Park resident.
Neighbors said the Gurrola family is friendly and nice and have two school-age children. In fact, several children live in the neighborhood.
"I see a lot of kids in the neighborhood, and I would hate for a kid to see anything like that. A little disheartening," said Solomon.
Police are eager for them to find the missing car to provide more evidence and clues.