Two charged over wheelie bin murder

He had been reported missing several weeks earlier.

Only his torso was found in the bin with police still trying to locate his head and limbs.

On Friday detectives searched a house in Adelaide's north after taking the woman into custody.

They said she was known to Mr McLean.

The man was arrested on Thursday and was believed to be known to the woman.

Detective Inspector Mark McEachern said investigations were ongoing with a focus on finding the rest of Mr McLean's remains.

He said detectives strongly suspected other people were involved in the dismemberment, removal and storage of the body.

"So further arrests are quite possible," he said.