"This account is non stop cyber harassing me. Defaming me and needs to be reported," he wrote in the caption while sharing a screenshot of the account using his same profile photo.
"I'm going to have to bring this to the authorities and my team of attorneys and trust me my attorney doesn't lose," he maintained. "I promise on everything."
"Just watch how the cards play out here," the "I Want Candy" singer added. "It's all bull sh*t everything. You will. See!!!!!"
Carter's post comes in the wake of the explosive drama between him and his baby mama, who recently called things off for the second time since welcoming their son, Prince, back in November 2021.
It was recently revealed that Martin filed to obtain a domestic violence restraining order against the singer after alleging he got physical with her during a heated argument on Monday, February 21.
As OK! previously reported, Martin alleged in her request that Carter "punched me in the left rib and pushed me," although she "didn't feel pain till a few days later." She later went to see a doctor and had X-rays done, where it was confirmed that she was suffering from three broken ribs, according to the docs.
She went on to explain the reason for the explosive fight between her and Carter, alleging that the "Crush on You" singer got upset because she talked to another man and threw out both her and her baby, prompting her to file for an order of protection for herself and their infant son.
"I think [Carter] needs to go to anger management asap," she wrote in the docs filed Monday, February 28. Martin also claimed Carter has a pistol and three other firearms in his home.
While his son seemingly remains in the care of his baby mama, Carter recently cried out to say he misses Prince via Instagram last week. "I miss you son," he wrote. "Daddy loves you always."
Meanwhile, Carter tried serving Martin with his own restraining order after branding her a "scam artist" and accusing her of having a knife during an argument. He stated in his request that a minor was also in need of protection, most likely referring to the former flames' son.
Last week, the record producer shared an alarming video of himself chasing Martin with the apparent restraining order, causing her to run in fear. "You've been served. See you in court #restrainingorder," he wrote in the caption on the since-deleted clip.