The family of Georgia school shooter Colt Gray threatened to go 'full throttle' after the 14-year-old was charged as an adult for murdering four people on Wednesday.

Gray's relatives leapt to his defense within hours of him opening fire at Apalachee High School, where he allegedly killed four people and injured nine others. 

The teenager's aunt, Annie Polhamus Brown, took to Facebook during the aftermath, bringing up the issues he 'dealt with' and saying she 'will take care of my nephew and what he needs on this side.' 

'Just check yourself before you speak about a child that never asked to deal with the bull**** he saw on a daily basis,' she said in the posts, which have now been deleted. 

'Y'all ready to see Polhamus blood in full throttle? Nah, I wouldn't either.' 

The social media posts sparked fury as tributes poured in for the four victims in the tragedy, teachers Christina Irimie and Richard Aspinwall, and students Mason Schermerhorn and Christian Angulo, both 14.