Whoever, in a street or public place within the limits of the municipality, loiters for the purpose of prostitution or importunes a person to the commission of sexual immorality, shall be liable on conviction to a fine which may extend to fifty rupees :
Provided that no court shall take cognizance of an offence under this section except on the complaint on the person importuned, or on the complaint of a municipal officer or a police officer not below the rank of a sub-inspector respectively authorized in this behalf in writing by the Municipality and the District Magistrate.