Sam Poueu Sam Poueu

Biggest Loser contestant Sam Poueu is in critical condition after falling several stories off a building over the weekend, TMZ reports.

Poueu suffered a pelvic injury, torn ligaments, a punctured lung and a broken leg, but is conscious in a San Francisco hospital, according to the site. It is unclear what caused the Saturday fall.

Check out photos of Sam Poueu

"Sam Poueu is a beloved member of our Biggest Loser family and we are keeping him and his family in our thoughts and prayers," NBC said in a statement.Poueu lost 142 pounds on Season 9 of Biggest Loser and is engaged to fellow contestant Stephanie Anderson.