LOUISVILLE, Ky. (AP) -- Officials at Churchill Downs are working to relocate horses after a powerful storm that spawned tornadoes blew through Louisville.

A few barns partially collapsed and horses were running loose Wednesday night at the track, home of the Kentucky Derby. The chapel was also damaged. There are no reports of serious injuries to humans or horses.

A mayor's spokesman says a couple of people may have been trapped in their cars in high water on the east side of the city. Some damage was also reported in the Shively area on the southwest side.

The National Weather Service said radar was tracking a confirmed tornado near the famed track and the University of Louisville campus about 8:10 p.m. No damage was reported on the campus.

No races are run on Wednesdays, but Churchill Downs President Kevin Flanery says there was simulcasting of races elsewhere, so people may have been there. Thursday's race card was canceled.

Louisville Gas and Electric reported about 7,600 customers were without power at one point, but that was down to around 5,000 late Wednesday.