An Afghan man arrested for allegedly killing a British woman and then stuffing her body inside a suitcase said he had become angry with her because she was trying to get him to join a 'strict' Christian group.The body of Elisabeth Jane Ross, 38, who was also known as Lisa, was discovered inside the suitcase by a homeless man in an abandoned carpark in the Kypseli district of Athens on July 18.Greek police arrested a 26-year-old man on Sunday night with graphic details emerging about the crime and the testimony his wife provided that led to his capture.And police sources revealed that the man - who had converted to Christianity - told his wife that he had argued with Ms Ross because she wanted him to join her 'stricter' Christian group.The man, who has not been named, was arrested shortly after Ms Ross's mobile phone - which had been off for days - was suddenly switched on earlier this week with police immediately tracing it to a residence in Athens where the man was staying with his wife and child.When questioned by detectives, the man's wife told officers that they had earlier been staying in Arachova, a mountainous village around two hours away from Athens and while there she became concerned after her husband went missing on 16 July.After using a shared location tracking app, she saw that he was in an apartment in Rethymnou Street, central Athens, where Ms Ross was staying and is believed to have been killed.Elisabeth Jane Ross was found dead with her body stuffed inside a suitcase in Athens, Greece The address where Ms Ross had been staying prior to being found. Her body was discovered three days after telling Greek friends that she was going to Kypseli