National leader Simon Bridges says the number of cases before the courts involving serious harm has increased by 25 per cent since the election in 2017.
He is basing his statement on answers to written parliamentary questions from Justice Minister Andrew Little to National's justice spokesman, Mark Mitchell.
Nationally, cases of serious harm were up 25 per cent, with an increase of 20 per cent in Auckland; 35 per cent in Waitakere; 32 per cent in Wellington; and 40 per cent in Christchurch.
The figures show that the number of serious harm cases before the courts in October 2017 was 17,189, that they steadily increased last year to 19,554 in December, and rose to 21,645 in April 2019.
The questions asked of Little was "What was the number of total active serious harm cases, broken down by district court, each month since October 2017?"