A police investigation into the death of a Wanganui toddler is to focus on the boy's family.
Karl Perigo-Check, aged 2, died in Wanganui hospital two weeks ago from serious internal injuries.
He was the son of Karl Check, a Mongrel Mob gang member convicted of the 2007 murder of Wanganui two-year-old girl Jhia Te Tua.
Police say family and associates of the boy will be interviewed over the next few days.