Missouri ? A man who claimed to have lured at least seven drug dealers to his cabin, killed them and spread their remains across the property was cleared of a murder charge Wednesday after experts determined most of the fragments were from animals.

Anthropologists found that only 50 of the pieces were human, and that those appeared to have come from a professionally prepared anatomical specimen, prosecutor Teresa Hensley said Wednesday.

Michael Shaver had been charged Aug. 20 with a single count of first-degree murder after officers began finding bone fragments on his rented property in Harrisonville. Dozens of officers scoured the heavily wooded property for more than a week; they found more than 200 fragments and a hatchet.

Last week, Henley received the final results of an analysis of 19 blood stains found in Shaver’s bedroom. Only five of the blood stains were identified as human – and DNA tests showed that in four cases it was Shaver’s blood.