Nearly 600 families in Ratanakkiri province have placed their thumb prints on a petition to demand that Pen Bonnar, former Ratanakkiri provincial coordinator for local rights group Adhoc, be allowed to return to work in the province. Representative Chuk Savath, 50, from O'Chum district said on Tuesday: "We have now collected thumb prints of 538 families from four districts of Lumphat, O'Chum, Vinsay and Koun Mom and will travel to O'Yadav district." More than 1,000 families are expected to sign the petition, which will be delivered to the government, Chuk Savath said.