Police in Porirua are becoming increasingly concerned about a man they describe as a serial indecency offender.
Police now have six confirmed reports of indecent exposure and two reports of showing pornographic images to boys between the ages of 12 and 16.
Detective Terry Laws says the incidents occurred at Linden and Tawa railway stations and near Tawa College.
The latest involved a boy, aged 12, who was approached by a man who showed him pornographic images on a cellphone.
The man is described as a European aged between 30 and 50, of medium build, often wearing dark clothing. On six occasions he has been wearing a black beanie.
Detective Laws says police have notified schools in the area about the man.