Taiwan has declined to confirm media reports that one of its 25 diplomatic allies could switch ties to the mainland in yet another round of diplomatic tussling between Taipei and Beijing. 'We need to check with the Dominican Republic government before we can say whether the reports are accurate or not,' Taiwanese Foreign Ministry spokesman Michel Lu Ching-lung said yesterday. He was reacting to reports that the Caribbean island country was considering establishing diplomatic relations with Beijing. Quoting Dominican Republic Foreign Minister Carlos Morales Troncoso, the reports said the country's president, Leonel Fernandez, would make an official visit to Taiwan in June to 'look at Taiwan's offers and we will see if Taiwan or China is better for the Dominican Republic'. Mr Lu stressed the Dominican Republic had been a staunch supporter of Taiwan and Mr Fernandez, who visited Taiwan in January, had said his government would continue to support the island in its bid to join international organisations, including the UN and the World Health Organisation. Mr Lu said the government had invited Mr Fernandez to visit Taiwan again to discuss further co-operation between the two sides, and he believed the nature of such a visit was not to compare offers from the two sides of the Taiwan Strait. The potential switch is the latest in a diplomatic tug of war between Taiwan and the mainland, which regards the island as part of the mainland and so not entitled to sovereign contacts with other countries. The reports follow a visit to Fiji by Premier Wen Jiabao for talks with eight South Pacific countries to increase Beijing's influence in that region and squeeze out Taiwan. Both Taiwan and the mainland have stepped up what observers see as chequebook diplomacy in the South Pacific region, although Beijing and Taipei have denied such claims.