Associated Press - November 24, 2009 9:44 AM ET

TUCSON, Ariz. (AP) - University of Arizona police are asking for the public's help as they investigate a bottle throwing incident that seriously injured a University of Oregon cheerleader last Saturday night.

Fans stormed the field near the end of Oregon's 44 to 41 double overtime victory over the UA.

Police say several bottles were thrown onto the field when Oregon cheerleader KateLynn Johnson was hit in the head by a full bottle of water.

Johnson was standing on the southwest side of the stadium when a full bottle of water hit her on the head and knocked her down.

She was hospitalized overnight and treated for a concussion.

UA police Sergeant Juan Alvarez said they want anyone who witnessed the incident or if they have video to come forward.

Information from: KVOA-TV, http://www.kvoa.com/

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