Karmelo Anthony retrial hearing continues for second day after bombshell revelations about backgrounds

Following a whirlwind of new background information revealed about both Karmelo Anthony and Austin Metcalf, Anthony's defense will continue to push for a new trial on Friday.

During Thursday's opening statements, the gloves came off between the defense and prosecutors as they exposed the violent backgrounds of both Anthony and Austin Metcalf.

The defense said that during the first murder trial against Anthony, the private off-the-record agreements made it impossible for him to have a fair trial.

It was revealed Thursday that there was a private off-record agreement to keep the sordid backgrounds of both Anthony and Austin Metcalf from the jury and the public so that the murder trial would focus solely on what happened under the tent at the Frisco high school track meet last year. 

CBS News Texas learned new details about Austin Metcalf and his twin brother Hunter Metcalf's background from court documents that included a graffiti incident, his use of racial slurs, bullying and assault allegations.

But the never-before-released details of Anthony's teen years in Louisiana up to the day of his arrest for murder are also disturbing, which include threatening texts, stalking, and assault allegations.

The hearing is expected to end on Friday. The first witness for the defense will be the previous trial defense attorney, Toby Shook.