Dramatic videos show stage collapse at Indiana high school,,,, At least one person was critically injured and 12 others seriously as the stage gave way at Westfield High School,

WESTFIELD, Ind. -- More than a dozen people were injured when a stage filled with students collapsed during a musical performance at a central Indiana high school Thursday night, authorities said.

Capt. Charles Hollowell of the Westfield Police Department said authorities didn't have an exact number of injuries but were certain more than 12 were hurt. At least one person was critically injured as the stage gave way at Westfield High School, he said.

Hollowell did not have any further information about that person's injuries. No fatalities were reported.

Authorities were investigating the cause of the collapse, reports CBS Indianapolis affiliate WTTV.

A large group of students was on the stage during the grand finale of the concert dubbed "American Pie" when the floor of the stage collapsed into the orchestra pit below, videos taken by audience members showed. One was Sara Camden, who tweeted video she took: