The custody battle between Jenelle Evans and Nathan Griffith is only getting worse.

According to a new report, the Teen Mom 2 star went to court Tuesday to continue to fight for full custody of two-year-old son Kaiser.

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Jenelle has allegedly refused to allow Nathan to see little Kaiser, claiming his "multiple criminal charges" were a bad influence on their son. Further, a source claimed she even filed an emergency court motion to alter their current custody agreement.

nathan griffith jenelle evans splash

Jenelle Evans and Nathan Griffith in 2013.

“Defendant communicated to plaintiff that defendant’s mental health is not stable and that he is unable to care for the minor child,” Jenelle's documents claimed.

Jenelle's former beau has quite the criminal history. In February of last year, Nathan turned himself in to law enforcement after a warrant was issued for his arrest for misdemeanor larceny. Jenelle had filed charges after she claimed the former Marine stole her car.

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Over the summer, Nathan was arrested yet again on charges for burglary and domestic violence. Continuing his run-ins with the law, the Teen Mom 2 star had a warrant out for his arrest after allegedly choking his on-again, off-again girlfriend Jessica Henry.

“The offender got on top of her and began choking her [when they arrived back home]. The victim stated that she started yelling the [roommate]’s name for help," court documents stated. The involved roommate also saw Nathan allegedly "pinning the victim down on the bed."

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All bundled up! ❄️💕 #MommasBoy #Burr

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Fortunately, Jenelle was victorious during her court appearance. "He has to have supervised visits with his mother supervising him with Kaiser from now on,” a source revealed.

Jenelle is currently pregnant with her first child with boyfriend David Eason; she shares son Jace with Andrew Lewis and Kaiser with Nathan Griffith.

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