Investigators say the 53-year-old supervisor, with the CLIP program, was taking pictures of a lot in the 3000 block of Mutter Street.
Just before 8 a.m., police say the suspect stabbed the victim from behind.
The 53-year-old man was treated for non-life-threatening injuries.
Police do have surveillance video of the attack.
The CLIP program sends crews to local neighborhoods to make sure certain areas are kept clean.
------
Send a News Tip to Action News
Learn More About 6abc Apps