A 33-year-old man was killed in a suspected tiger attack in the Dudhwa area here, a forest department official said on Monday. Nagendra Singh, a resident of Narendranagar Beli village, had gone to a cane field to collect grass on Sunday evening when a big cat attacked and killed him, the official said. Deputy Director of Dudhwa buffer zone Sundaresh said the animal that attacked Singh is suspected to be a tiger.