He’s fed up. Season 9 of MTV’s hit reality TV series Teen Mom 2 premiered last night, and Jenelle Evans‘ storyline kicked off on a serious note. Her ex-fiancé Nathan Griffith made some very disturbing abuse claims against Jenelle’s husband, David Eason, regarding Nathan and Jenelle’s son Kaiser. Nathan claimed that David allegedly abused Kaiser, and shortly after the episode aired, Nathan took to Twitter to share extremely graphic photos of bruises on Kaiser’s bottom that he claimed were the result of alleged physical abuse.

“@MTV please stop playing an innocent bystander. Editing is hell. This is my son. My pride and joy. Tons of unedited pill bottles, alcohol bottle, neglect, and indecent conversations are [filmed] around children. It shows nothing but greed. People love resolutions and a happy ending,” Nathan, 31, wrote on Twitter.

During the episode, which aired on Monday, January 14, Nathan explained how he discovered the bruises on Kaiser’s bottom. Kaiser was staying with Nathan and Nathan’s girlfriend Ashley for their weekend visit, and Kaiser asked Ashley to help him in the bathroom. When Ashley was helping Kaiser, she allegedly noticed marks and called Nathan into the bathroom.

“I look at my son’s butt and there are switch marks all across,” Nathan said. He asked Kaiser what happened and according to Nathan, Kaiser replied, “David, he hit me with a stick.”

Nathan said that he decided not to return Kaiser to Jenelle and David that Sunday when their visitation was over. “I said, ‘We’re not giving Kaiser back.’ I was like, ‘I’m afraid for his welfare, and I feel that he’s in danger. I’m not giving him back,'” he told a pal during the scene.

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The next day, Nathan’s mother was forced to give Kaiser back because Jenelle called CPS and the police said Kaiser needed to return to Jenelle, per their custody agreement. “To tell you the truth, I don’t want David anywhere around him. I don’t feel safe with my son around him. He has a violent criminal record,” Nathan said.

Jenelle and MTV did not immediately respond to In Touch‘s request for comment.

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