"Facebook killing" suspect charged with first-degree murder

MIAMI, Fla. - A Miami man accused of fatally shooting his wife then posting a photo of her corpse on Facebook has been formally charged with first-degree murder.

PICTURES: Fla. man posts pic of dead wife, confession on Facebook

A grand jury indicted 31-year-old Derek Medina last week. A hearing was held for the new charge on Monday, with a plea hearing set for Wednesday. Medina had previously pleaded not guilty to second-degree murder with a firearm.

Medina told detectives after his arrest that he was acting in self-defense when he shot 26-year-old Jennifer Alonso on Aug. 8 at their South Miami home. A police detective who testified at an October hearing said forensic evidence indicates Alonso was on her knees with one arm raised in front of her at the time of the shooting.

Medina claimed Alonso came at him with a kitchen knife.

According to CBS Miami, Medina walked into a police station after allegedly killing Alonso and told officers “I had an argument with my wife and she was hitting me.  She always hits me all the time. I got tired of her hitting me so I shot her.”

When officers asked dispatchers to send fire rescue to the couple’s house, Medina reportedly blurted out, “oh she’s dead. I know she’s dead because I emptied my 380 in her. Five shots.”

Messages seeking comment from Medina's attorney weren't immediately returned.