Investigators are looking for two suspects who beat the postal worker outside of his truck on Chicago's Northwest Side.
The U.S. Postal Inspection Service is leading the investigation, which help from Chicago Police. They say they do not know a motive yet because the suspect ran away after the beating without taking anything.
It happened as the mail carrier was doing his rounds on the Northwest Side. Two men approached him.
"One of the men came from behind and hit him in the mouth and the other man just approached him and stood in front of him and there was a verbal altercation," said Julie Kenney.
There were witnesses in the area when this happened about four in the afternoon Tuesday.
Investigators are talking to several of them.
A number of resident have heard about the attack.
"It's a little concerning that they will target one person like that. I don't know if it's something that's going to happen again or if it was just a one-time thing," said resident Shakaira Lopez.
"If they did this to a postal man, which they knew the law was going to be involved. What would they do to regular pedestrians?" said resident Jackie Villanueva.
Because this involved a mail carrier the Postal Inspection Service is the lead investigator. And the suspects would face federal charges.
"Nothing was taken, no mail was stolen, none of his personal property was stolen, so at this time we don't know why they attacked him," Kenney said.
The mail carrier suffered a fractured jaw. Police said he was able to give them a general description of the suspects.
Suspect 1: 6'1", black male, 25-30 years old, medium build, dark skin, elongated face, possible right upper mouth gold/yellow tooth, goatee facial hair, dark black zip-up hoodie.
Suspect 2: 5'9", black male, 25-30 years old, medium build, black or gray hoodie/jacket and dark pants.