People confess to a lot of things on Facebook : their frustrations , bad habits , secret longings and new loves . A Florida man confessed to something much more sinister Thursday . He said he killed his wife . Derek Medina , 31 , posted a picture of Jennifer Alfonso 's blood-stained body -- collapsed and contorted on the kitchen floor -- to his Facebook feed with a note , according to authorities . `` Im going to prison or death sentence for killing my wife love you guys miss you guys takecare Facebook people you will see me in the news , '' he purportedly wrote . Why people share murder , rape on Facebook . Medina , who lives in South Miami , drove to see his family , to tell them what he did . Then he turned himself in to police , according to his arrest affidavit . He is being held without bond on a preliminary charge of first degree murder , the Miami Dade State Attorney 's Office spokesperson told CNN . The court has 21 days to formally charge Medina . Facebook friends commented on the photo in shock . `` That is my friend there . '' `` What happened ? ? ? ? derek . '' `` WHAT ? ? ? ? ? ? '' Other Facebook users reacted with disgust to the posting of the picture of his wife 's corpse . She was 26 . `` this is crazy omg ... guy kills his wife post pic in facebook . '' The disgust did not prevent the commenters from sharing Medina 's photo . Again and again . When evidence goes viral . The gruesome image stayed online and was passed along for at least five hours . Facebook was notified of the content and employees removed the picture and disabled Medina 's page and that of his deceased wife , according to Facebook . In his note , Medina accused his wife of abusing him and asked his friends for their understanding for what he did to her because of it . The police report with his confession cast a more detailed light on the course of events . This was Medina 's account to Miami Dade police : . He and his wife argued . He pulled a gun on her . She threatened to leave him . He put the gun away and followed her . She unloaded a volley of punches on him . He fetched the gun again . She pulled a knife . He wrestled it out of her hands . She punched him again . Then he shot her `` multiple times . '' Opinion : The dark side of social media . He felt certain she was dead . He did not call 911 , the affidavit states . He changed clothes , and after seeing his family , went to a police station and began the process of confessing . After he gave police his address , they drove to the scene , where they found the body . The couple 's 10-year-old daughter was also still in the house , police said . She was physically `` unharmed . '' Medina self-published self-help books and maintained a website called EmotionalWriter.com . His books claim to be about `` effective communication '' and `` marriage counseling tips , '' according to the website . `` Derek Medina is an emotional writer . His goal is to save people 's lives thru his books he has published , '' the website says . `` My goal is for you , the readers , to open up your eyes and change for the better . '' Hours before the slaying , Medina posted a picture of his wife , his daughter and himself having dinner together outdoors at a marina . They were all smiling .
Derek Medina posts a picture of his dead wife 's body to Facebook . Online , he tells his `` friends '' that they will hear about him in the news . He asks for their understanding for what he has done . " The police are called and find out who is responsible for this crime.