Police are concerned for an 84-year-old Kaiapoi man missing since this morning.

Leonardus Naber was last seen at 9.15am in the Double Days Rd area.

He was wearing a black sweater with a thin white line pattern, brown pants and black shoes.

Police say Naber has poor health and they are asking anyone who has seen him to call Christchurch Central Police Station on (03) 363 7400.