A cold-blooded robber threatened a 44-year-old man with an ice scraper on Polk Street on Wednesday, police said.

The chilling heist occurred in the 1000 block of Polk Street just before 3 a.m. The robber put the ice scraper to the victim’s neck, then stole his wallet and cellphone, police said.

The victim was injured in the robbery, but was not transported to the hospital, police said.

The robber was described as a man in his mid-30s. There has been no arrest, police said.

maldax@sfexaminer.com