Another boy has been charged over the alleged abduction of a 14-year-old in Melbourne's south-east.
The 14-year-old is still in a serious condition in the Royal Children's Hospital after the incident, which occurred about 3.35pm on Monday when he was walking home from school in Glen Huntly.
He was allegedly confronted by unknown offenders in a Volkswagen Tiguan before he was forced into the car, which drove along Neerim Road, according to police.
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A short time later the 14-year-old left the moving car, in unknown circumstances, near the intersection of Grange Road, and sustained significant injuries.
A 15-year-old Cranbourne boy was arrested in Mentone about 12.50pm yesterday.
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He has been charged with multiple counts of armed robbery, robbery, conduct endangering life, intentionally causing serious injury, theft of motor vehicle and theft.
He has been remanded to appear at a children's court at a later date.
Another boy, 14, was previously charged over the incident and remains before the courts.
The investigation is ongoing.