police arrested a 27-year-old man on thursday on the nsw south coast .
he had been on the run since wednesday after police pulled over a car .
daniela d'addario 's body was found in the boot of the blue car .
she was reported missing by worried family members on monday .
she vanished along with her boyfriend josaia -lrb- joey -rrb- vosikata , 27 .
vosikata had a wife and children back in fiji , ms d'addario 's friend says .
mr vosikata will face court on friday after being extradited to the act .