09/12/2011 04:38 pm ET | Updated Nov 12, 2011

Sam Poueu, 'Biggest Loser' Contestant, Falls From San Francisco Building

SAN FRANCISCO -- Local fan-favorite and former "Biggest Loser" contestant Sam Poueu is in critical condition after plummeting several stories from a San Francisco apartment building on September 3.

According to a family statement to People magazine, Poueu was at a dinner party at a friend's apartment when the accident occurred. After dinner, Poueu went to check out the view on the rooftop when the door locked behind him. According to the statement, Poueu "attempted to climb down the fire escape ladder to drop down into the fourth floor balcony and slipped. The San Francisco Fire Department responded within minutes thanks to a neighbor's immediate call." Poueu suffered a broken leg, a punctured lung, head trauma, a pelvic injury and torn ligaments from the fall.

Although he is still in critical condition, Poueu is conscious and is able to recognize visitors, according to TMZ.

The 25-year-old Poueu lost 142 pounds during Season 9 of the weight-loss reality show, "The Biggest Loser." One year later, he proposed to fellow contestant Stephanie Anderson on television. The couple plans to marry in 2012.

Poupeu's cousin and partner on the show, Koli Palu, released a statement about Poueu's condition, saying:

Sam Poueu has made serious improvement in the last few hours. He has become very responsive to Stephanie Anderson and his Mother, squeezing their hands and kicking his feet. The head trauma has pretty much stabilized. He still has a long way to go but thank you so much for your love and prayers. ~ KEEP PRAYING EVERYONE!!!! :)

People magazine also contacted a representative from the reality show. "Sam Poueu is a beloved member of our 'Biggest Family' family and we are keeping him and his family in our thoughts and prayers," said the rep.

As Poueu recovers, a trust fund has been set up to to help cover medical expenses.

Watch US Weekly's video of Poueu's 2010 proposal to Anderson below: