All of the remains have now been taken to Christchurch for an autopsy and DNA testing.
The grisly finds are not thought to be suspicious.
It comes after Timaru man Darryl McNee, 44, was reported missing on May 1.
A Mazda 323 station wagon belonging to Mr McNee was found at the end of Connolly Rd, Seadown - near to where the human remains have washed up.
Police said at the time there were concerns for his wellbeing.
However today, police wouldn't comment if the finds were related to the Mr McNee missing persons inquiry.
"We will be conducting a range of inquiries as part of the work to identify the remains," the spokesman added.