The Okere-Urhobo royal family in Warri, Delta State, has knocked the Okumagba royal family over an allegation of land grabbing of over 30 hectares of land in the town. The members of the Olodi, Oki and Ighogbadu families in Okere-Urhobo of Warri South in a statement on Wednesday dismissed the claims made by one Louis Okumagba about the hectares of land in contention, while calling on the Inspector-General of Police, Usman Baba, to wade in the matter.