The 'kind, caring and loved' boy from Bredbury passed away last week....
Four arrests have now been made in total....
Detectives are urgently appealing to the public....
Crucial investigations are ongoing....
A murder investigation is now underway...
A police investigation is now underway....
A horrific story....
No arrests have been made as of yet....
The offences took place between 2016 and 2018....