Derek Medinas life was open to the world.
On YouTube, the 31-year-old South Miami man posted scores of videos of himself enjoying sports.
He authored six online books, with long-winded titles about spirituality, saving the world and hunting ghosts. Medina snapped photos of his arm tattoos, meals, boating trips and drinks poolside with his wife.
But on Thursday, Medina shocked South Florida by making one last announcement on Facebook: that he had shot and killed his wife before posting a photo of her twisted, bloodied body lying on a linoleum floor.
Im going to prison or death sentence for killing my wife. Love you guys. Miss you guys. Take care. Facebook people youll see me in the news, Medina wrote in a Facebook post that remained public for hours Thursday evening before the site removed his profile page at the request of police.
Even in a world accustomed to intimate details of peoples lives plastered on social media, Medinas posts which went viral were shocking.
Medina walked into the South Miami police station around noon Thursday, then spent the evening speaking with homicide detectives about what led up to the shooting death of his wife, Jennifer Alfonso, 26.
Investigators, armed with a search warrant, began documenting the crime scene inside the couples townhouse at 5555 SW 67th Ave., then charged Medina with first-degree murder late Thursday.
Alfonsos 10-year-old daughter from a previous relationship was upstairs at the time of the killing, but was unharmed. Officers quickly escorted her out of the home, with a blanket wrapped around her, after finding Alfonsos body.
Medina is likely to claim self-defense.
His father, Derek Medina Sr., told reporters his son killed Alfonso only after she brandished a knife. In the younger Medinas Facebook post, he did not mention a knife, but wrote: My wife was punching me and Im not going to stand anymore with the abuse so I did what I did. Hope u understand me.
But according to an arrest report, Medina admitted to investigators he got into an argument with Alfonso. The report said he went upstairs, fished his pistol from a closet and pointed it at Alfonso.
Alfonso yelled she was leaving him, according to the report by Detective Jonathan Grossman. Then, Medina still brandishing the weapon followed her downstairs to the kitchen, where she grabbed a knife.
Medina said he disarmed Alfonso, put the knife in the drawer, then shot her several times after she began punching and kicking him, the report said.
The photo Medina posted on Facebook shows Alfonso, wearing all black and pink socks, on her knees, twisted backward in a bloody heap.
Alfonsos former boss at a West Miami-Dade Dennys told the Miami Herald that the husband was extremely jealous and had hit Alfonso in the past.
She would be bruised up, said Amada Cooper, who described Medina as a controlling husband who tried to force her to quit her job as a server because he didnt want her working nights.
After several violent episodes, another co-worker implored Alfonso to leave him. He would always come back, begging her come back, said Cathy LaBella. She would say he was going to change. She was in love with him.
Medina and Alfonso initially married in early 2010 after dating only a few months. The marriage was stormy and friends said he would often kick her out. The two always got back together, however.