So sad, let's hope the remaining victims pull through.

A fifth person has died from the collapse of an outdoor concert stage in heavy wind just before a weekend show at the Indiana State Fair, which was shut down on Sunday, authorities said.

More than 40 people were injured in the collapse on Saturday night, just minutes before the country duo Sugarland was set to begin performing, Indiana State Police said.

Some of the injuries were extremely serious, and more people could die, said State Police Sgt. Dave Bursten at a news conference.

"That possibility is there," he said

Concert officials had informed spectators prior to the show that the concert might have to be postponed due to the weather, but a strong gust blew the stage over before any official evacuation order was issued.

Indiana Governor Mitch Daniels called the collapse "freakish," saying at the news conference that a storm was anticipated but the blast of wind that whipped through the grandstand area was unexpected.

One of those killed was stagehand Nate Byrd, 51, who was on the stage rigging to run the show's spotlight. He died on Sunday at Methodist Hospital.

Killed on the scene were Tammy Vandam, 42, of Wanatah, Indiana; Glenn Goodrich, 49, of Indianapolis; Alina BigJohny, 23 of Fort Wayne and Christina Santiago, 29, of Chicago, according to the Marion County Coroner's office.

State fire marshals and the Indiana Occupational Safety and Health Administration are investigating the collapse, authorities said.

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