Murder of Mengqi Ji solved by tree DNA science

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In March 2021, the body of 28-year-old Mengqi Ji was discovered by a hiker. She was buried under a juniper tree at Rock Bridge Memorial State Park in Missouri. And it was not the killer’s but the tree’s DNA that would ultimately solve her murder.

This seems to be the only known case where the DNA of a tree led to a murder conviction.

The husband was immediately suspected

Mengqi Ji Elledge was reported missing on October 10, 2019, by her husband Joseph Elledge. He called the local police station in Columbia, Missouri. He claimed he believed his wife had left him. And she only took her purse when she ran away.

Authorities were soon concerned that she had left behind her passport, cell phone, house keys, and her car. And abandoned her beloved 1-year-old daughter.

Investigators never found any credit card activity, uber rides, or other evidence that the woman ran away. From the start, they believed her husband may have been responsible.

Her mother, Ke Ren, already knew that something had gone very wrong. Mengqi Ji called her mother in China every day. And on October 9 she did not receive a phone call from her daughter. 

Elledge was first arrested for child abuse

Mengqi Ji had also been documenting her husband’s verbal abuse and recent physical abuse of their 1-year-old daughter. She shared hours of tapes with a close friend and sent photos of bruises on her child to her mother, as well.