According to police, Guayllas, works construction in the day labor business in Chicago, and he drives a 1996 white Mazda four-door vehicle with a license plate of X135825.
The man is described as Hispanic, 5 ft. 7 inches, 170 lbs., with brown eyes and hair and a medium complexion. His date of birth is Nov. 13, 1983.
Police say he has not been seen or heard from by his roommates or by his cousin, and the subject has not answered his cell phone but he may be working a day labor job in a different city or state.
Anyone with information about the missing man is asked to call Chicago police at (312) 746-8365 or (312) 746-8282.
