jaipur cops are yet to determine the motive behind the deaths of the unmarried couple at muhana on saturday while the woman died due to head injury the youths cause of death remains to be ascertained police are yet to find if it is a case of double murder or suicide while deshraj 23 was dead when his body was found khusbu kumari 19 was still alive though succumbed few hours later while the girls postmortem report said she died due to the head injury the youths autopsy report did not tell the cause of his death now fsl team will study the samples taken from him to ascertain the cause of death there is a possibility that he might have attacked the girl and then consumed a poisonous substance but as of now it is very difficult to say as to what actually happened and we are investigating all aspects in the case said an official of muhana police stationofficials claimed at present they do not know if it was a case of murder or suicide as there were no injury marks on the youths body while the girl had injuries on her head they were hoping that the girl would gain consciousness and would be able to tell as to what transpired but she died before cops could talk to heraccording to officials both the deceased were from not from rajasthan and they were looking into the possibility if the couples families might be involved in the deaths the official said the families of both the deceased claimed that they had no knowledge that the two were in a relationship or that they stayed together in jaipur we will question them further to get more details the bodies were handed over to the families after the autopsies