BEIJING --- The International Olympic Committee said today that it had asked gymnastics officials to investigate whether the Chinese women's gymnastics team that won the gold medal had underage athletes, saying "more information has come to light."

"We've asked the gymnastics federation to look into it further," IOC spokeswoman Giselle Davies said. "If there is a question mark and we have a concern, which we do, we ask the governing body of any sport to look into it."

The IOC, which also asked the Chinese gymnastics federation to investigate, would not give details on what new information prompted it to act now, three days after the gymnastics competition ended.

Messages for the International Gymnastics Federation were not immediately returned.

Chinese coach Lu Shanzhen told The Associated Press they gave the FIG new documents on Thursday to try to remove the doubts about gold medalist He Kexin's age, including an old passport, a residency card and her current ID card.

He said all these documents were issued by various departments of the Chinese government and that he felt there was nothing more that they could do to put peoples' minds at ease.

A gymnast must be 16 in an Olympic year to compete at the games.

BEACH VOLLEYBALL: Americans Kerri Walsh and Misty May-Treanor, who have never lost a set in the Olympics, overcame steady rain, the partisan crowd and China's Wang Jie and Tian Jia 21-18, 21-18 on Thursday for their second consecutive beach volleyball gold medal.

They have won 108 matches in a row, a streak that could be put on hold because both plan to start families.

"We might be back," May-Treanor said. "We want our kids to see us play."

SOFTBALL: The U.S. softball team was stunned in the gold medal game, losing 3-1 to Japan.

Losing for the first time since 2000, the United States was denied a fourth consecutive gold medal, settling for silver in the sport's last appearance in the Olympics for at least eight years. Yukiko Ueno shut down the Americans, who had won 22 Olympic games in a row.

WOMEN'S SOCCER: The U.S. won its third gold medal in four tries, edging Brazil 1-0 on Carli Lloyd's goal 6 minutes into extra time.

U.S. goalkeeper Hope Solo held off the charge from Brazil, which carried play for much of the night.

TRACK AND FIELD: The Americans got a medals sweep in the 400. LaShawn Merritt won, and Jeremy Wariner, the defending world and Olympic champion and the favorite, slowed up at the end and barely held off David Neville, who dived across the finish line.

Jamaican Veronica Campbell-Brown ran the fastest women's 200 in a decade, 21.74 seconds, to beat American Allyson Felix.

World record-holder Dayron Robles, of Cuba, outran Americans David Payne and David Oliver in the 110 hurdles.

WATER POLO: Danielle de Bruijn's game-winner with 26 seconds left led the Netherlands to a 9-8 win over the United States in the gold medal game.

BASKETBALL: Diana Taurasi scored 21 points and Tina Thompson added 15 to help the U.S. women pull away from Russia 67-52 to make the gold medal game against Australia, which routed China 90-56.

DIVING: China is 7-for-7 after 15-year-old Chen Ruolin rallied on her last dive to earn four 10s, winning the gold in women's 10-meter platform.

TAEKWONDO: American Mark Lopez came within one kick -- and one second -- of winning gold.

However, South Korea took the two taekwondo golds.

Mark Lopez and his younger sister, Diana, secured gold and silver, respectively.

EQUESTRIAN: In Hong Kong, four horses in the team jumping competition have been provisionally suspended after testing positive for a banned pain reliever.

The four horses included Camiro, ridden by Tony Andre Hansen as part of Norway's bronze medal team, which could lose its medal.