Where one of the situations referred to in points (a) and (b) of F2Article 11(2) is officially confirmed, the competent authority shall immediately take all necessary phytosanitary measures to eradicate the relevant F3GB quarantine pest F4or provisional GB quarantine pest from the area concerned. Those measures shall be taken in accordance with Annex II.

That obligation to eradicate shall not apply where F5F6assimilated direct legislation relating to plant health provides or regulations made under Article 28(1) provide otherwise.

The competent authority shall without delay investigate the source of the presence of the F7GB quarantine pest F4or provisional GB quarantine pest concerned, in particular where that presence may be related to movements of plants, plant products or other objects, and the possibility that the pest concerned has been spread to further plants, plant products or other objects by those movements.

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The measures referred to in paragraph 1 and the investigations referred to in paragraph 2 shall be taken irrespective of whether the pest is present on public or private premises.