Cincinnati-based Procter-and-Gamble says Greenpeace protesters got into the company's headquarters Tuesday by wearing business suits and carrying their rappelling gear in briefcases.Company officials say someone who works in the building helped the group get inside, so they have tightened security. A spokesperson has declined to elaborate. The protesters were objecting to the company's use of palm oil from a supplier Greenpeace says is tied to tropical forest destruction in Indonesia. Palm oil is commonly used in shampoo, cosmetics and other products. The protestors were arrested and a free on bond.