GREAT FALLS, Mont. -

A jockey is hospitalized in serious condition with head injuries after a weekend horse racing accident in Great falls that injured the horse so badly it had to be euthanized.

Jockey Bill Christiansen fell during the fifth race Sunday at the State Fair Race Meet at Montana ExpoPark.

Meet director Kelly Manzer says he believes two horses clipped heels. Christiansen's mount, an 8-year-old named Vader Grade, suffered a serious shoulder injury and had to be put down.

Christiansen is in his 50s and is originally from Yakima, Washington, but works out of New Mexico. Spokeswoman Karen Ogden at Benefis Health System said Christian was in serious condition Monday afternoon.

The Great Falls Turf Club, which operated the meet, had insurance that will help cover the jockey's medical bills.