A young man impersonating as a police constable was arrested at Vasant Kunj here on Sunday.
The accused has been identified as Lalit Nawani, a resident of Uttam Nagar. The police received information that a man in police uniform beat up an auto-rickshaw driver on Rajokri flyover when the latter asked him to pay the fare. They crosschecked his antecedents found that he worked in a hotel. Subsequently, the accused was arrested and the uniform seized.