Green co-leaders James Shaw and Marama Davidson on Friday said the party had been aware of the accusation since December 27 but had not made a statement at the time because the store did not want the matter made public and was happy to wait for Ghahraman to return.
They also confirmed a second allegation of shoplifting had been made.
Scotties Boutique has continually refused to comment when approached by media.
Police also had nothing to say about the second alleged incident.
A Green Party spokesperson has confirmed to RNZ that Ghahraman was back in New Zealand on Monday.