The incident took place last night when 16-year-old Rajesh, who lives with his family in Madangir area, was returning home from somewhere.
"On his way home, a youth stopped the teenager and asked him to bring him a cigarette from a nearby shop. When Rajesh refused to do so, the youth slashed his cheek with a blade and fled the spot," a police official said.
Rajesh somehow reached home and narrated his ordeal to his family who rushed him to a nearby hospital and informed the police.