Despite being acquitted of the crime, Chris Kahui murdered his twin sons, Chris and Cru, in 2006, National MP for Rotorua Todd McClay has said under cover of parliamentary privilege.

Addressing Parliament last week during the second reading of the Crimes Amendment Bill (No 2) Mr McClay brought up the deaths of the 3-month-olds as one example of the "very many cases of children being abused, harmed" each year.

"We had another high-profile case of the Kahui twins, who were murdered ... I believe Chris Kahui killed those children, but ... that is for others to consider now."