Sir my uncle died due to poison and his wife was involved in giving poison

Sir my uncle died due to poison and his wife was involved in giving poison
Exhumation was done after 45 days doctor gave opinion that poison were not detected when I approach MS of the hospital and asked him to handover copy of PFSA he said report were received by police officials when I Lodge complaint against police inquiry was held and police found guilty for missing report therefore they approach PFSA and gave me duplicate copy sir I want to confirm that these reports are originals are edited in Photoshop furthermore sample of grave mud that doctor took police didn’t submit in laboratory IO asked that PFSA refuse to take mud sample they said mud samples are not required.
Kindly guide me I’ll be great full to you.