A second man has been arrested by police for his alleged role in the abduction of a schoolboy from outside his family's Gold Coast home.
The 12-year-old was walking from school to his family's Mudgeeraba home on May 11 when a bag was placed over his head and he was bundled into a car.
He was found the next day in Grafton in the company of 53-year-old Zheng Jie Zhang, who has since been charged with six offences including kidnapping for ransom.
Police on Monday released images of Zhang's 20-year-old son, Yu Zhang, also known as Sunny, who they say was also involved.
The 20-year-old on Tuesday afternoon voluntarily attended Cabramatta Police Station in Sydney's southwest, Queensland Police said in a statement.
Gold Coast detectives are expected to travel to Sydney on Wednesday to seek his extradition to Queensland.
Australian Associated Press
