Investigation launched into Green MP Darleen Tana

The Green Party is facing questions about how much it knew, and when, over allegations involving MP Darleen Tana. Ms Tana has been suspended from the party and an investigation has been launched after she was linked to alleged migrant exploitation at her husband's business - E Cycles NZ. The party stripped her of the small business portfolio on February the 1st when it first became aware of the allegations, but did not make that public at the time. Charlotte Cook speaks with former Green MP Gareth Hughes.