Kirkuk, Iraq ? Kurdish soldiers on Wednesday discovered a large mound containing human remains in a field adjacent to a home that once belonged to Ali Hassan al Majid, nicknamed “Chemical Ali.”

Human skulls, jawbones and what appeared to be arm and leg bones poked from four deep trenches cut in the earth about 100 yards from a compound that Kurdish soldiers said belonged to Majid, who led a 1987-88 chemical weapons campaign that killed tens of thousands of Kurds in northern Iraq.

The mound, which measures about 25 yards by 15 yards, was surrounded by four barbed-wire fences, one inside the next.

“We think these are the bones of those killed in chemical attacks in 1988,” said Lt. Paula Hakeem, a Patriotic Union of Kurdistan soldier.