A saltwater crocodile weighing more than a tonne and suspected of killing two people in the Philippines has been declared the largest such reptile in captivity by the Guinness Book of World Records. The 6.17-metre (20.24-foot) male, nicknamed "Lolong", was captured in the Agusan marsh on the southern island of Mindanao last September after a two-year search following the killing of a girl and the disappearance of a fisherman.