report and FIR. In both these documents, registration number of motor cycle and PMPML bus are not mentioned. Offence is registered against unknown motor cycle rider and unknown PMPML bus driver. In spot panchnama also, there is no mention of bus number. Therefore, it was necessary for the applicants to file complete copy of charge-sheet to show as to who had seen the accident, names of eye witnesses and their statements recorded by police. When offence is against unknown vehicles, it was obligatory on the part of applicants to show how Investigating Officer came to know about the involvement of this bus in the accident. Applicant ought to have examined any eye witness to the incidence and Investigating Officer. Admittedly, applicant No.1 is not eye witness. Therefore, her evidence is hearsay and based on police papers only which do not disclose the registration number of bus and motorcycle. No other eye witness is examined to prove involvement of bus in the said accident. On the other hand, non-applicant has examined driver and conductor of said bus as witnesses. They denied the involvement of their bus in the said accident. Their oral evidence is corroborated by copy of accident register at Ex.39.