It plans to release between 2,000 and 3,000 GM mosquitoes in some areas, said Lim Chua Leng, a Malaysian health ministry official. [...] However, Gurmit Singh, head of Malaysia’s Centre for Environment, Technology and Development, said: “There are a lot of risks involved.” Once the mosquitoes are released “you have no control and it can create more problems than solving them”, he added.