One person was killed and 13 others injured yesterday when a ventilation grate atop a parking structure collapsed under them during festivities after the Super Bowl 10K Run in Redondo Beach, Calif.

The victims, who tumbled about 20 feet, were believed to be participants in or workers for the 10-kilometer race through the streets of the southern Los Angeles County community, said race publicist Deke Houlgate.

A man, who wasn't identified, died at South Bay-AMI Hospital in Torrance, said a nursing supervisor who declined to identify herself. She said the man was wearing running attire.

Race entries included Orlando Pizzolato of Italy, a two-time winner of the New York Marathon, and U.S. Olympic runner Ruth Wysocki. Neither was involved in the accident, Houlgate said.

Eight injured people were sent to hospitals for treatment, and Houlgate said five others were only treated at the scene.

The grate, which allows exhaust fumes to escape the parking structure, gave way about 9:20 a.m. (PST) said police Lt. Ken Keating.

"There were several people standing on the vent, and from the weight of all the people on the grate, it gave way," Houlgate said . . .

Lisa Martin of Australia led all the way, easily winning the '88 Osaka (Japan) International women's marathon in a race record time of 2 hours 23 minutes 51 seconds.