The complainant submitted backdated letters to the PS as a response to my compliant. The PS forwarded those letters to SP office and HRC. I asked HRC for true copies, HRC informed originals are with the PS they can only give the true copies. I got true copies via RTI application from the PS. Are true copies admissible in court as evidence. During cross-examination the witness denied she is not aware of those letters or the signature. She is blatantly lying on oath. Should I ask the court to summon the SI who signed on those true copies I collected them few months back from the PS.