Dumped items include a bed, couches, clothes and rubbish.
The fight broke out in the early hours.
The Auckland Mayor's bluff is being called.
An area has been cordoned off and motorists are asked to expect delays.
Cordons have been stood down on Hobson Street.
The crash has closed the Onehunga Mall Road and Neilson Street intersection.
Anton went missing from his Randwick Park home.
One youth will face Youth Court, while five others have been referred to Youth Aid.
Auckland Transport has its own numbers and says the streets are safer.