Rapper Soulja Boy is in mourning following news that his younger brother was killed in a car accident outside Atlanta overnight.

“At home crying my eyes out I can’t believe my Lil bro is gone… today is so not my day.. RIP lil brother love you always,” the 20-year-old “Pretty Boy Swag” star Tweeted Tuesday.

According to Rap-Up, Miami Mike, the president of Soulja Boy’s S.O.D.M.G. label, also took to Twitter and revealed a few more details into the death as the story is still developing.

“The Flags are @ Half Staff @ the Offices of SODMG & PTE, R.I.P. to @Souljaboy little brother who passed-way in a auto crash last nite,” the executive wrote.

Developing….