The tragic deaths of four children—Harper, 13; Hudson, 11; and 10-year-old twins Gavin and Gracelynn Harmon—alongside their mother, Sarah Myers, 44, and grandmother, Amy Steadman, 64, were discovered in a murder-suicide in Mechanicville, New York, on June 23. The children’s father, Brady Harmon, described their suffering as "unimaginable" and "sickening." Toxicology reports revealed that all six individuals had been poisoned with a combination of allergy medication and kratom, a plant-based substance with opioid-like properties that can cause drowsiness and pain relief. Brady Harmon, who had planned to spend the summer with his children in Utah but hadn't seen them in person since 2019, is now in New York and has announced plans to sue local authorities for over $400 million. He claims the children were regularly drugged with substances similar to those found in their bodies. The lawsuit targets multiple entities, including the City of Mechanicville, school districts, and the Mechanicville Housing Authority. Harmon alleges that Myers and Steadman suffered from Munchausen by proxy, a condition where a caregiver fabricates or induces illness in someone else, typically a child, to gain attention or sympathy. According to the Mechanicville Police Department, the children and adults were found with high levels of diphenhydramine, the active ingredient in Benadryl, and mitragynine, a key component of kratom, in their systems. Three of the children died from poisoning, while 10-year-old Gavin had been stabbed, suggesting he tried to protect himself during the attack. A handwritten confession from Steadman was found at the scene, stating that she believed killing the children would protect them from alleged abuse in Utah. Investigators also found unsigned writings from Myers, which referred to the children as "my babies" and expressed anger toward the Utah family court system, alleging abuse by the Utah-based family. The incident came to light after the children missed a scheduled video call on June 13. A neighbor, Stephanie Sweeney, requested a welfare check after not hearing from the children for several days. The bodies were found just days before the children were supposed to travel to Utah to reunite with their father. Myers had a custody hearing scheduled for June 29, as she had allegedly not followed the parenting plan. While Myers claimed on social media that she was a victim of domestic violence, Harmon denies this. She had also created a GoFundMe page to raise money for a custody battle and legal representation in Utah. However, investigators said they could not independently confirm any allegations of abuse against Myers or her children.