On the same day, the jockeys Ray Cochrane and Graham Bradley were arrested. Cochrane has since been released without charge.
Brooks was originally due to answer bail together with Bradley on 10 March. However, he was out of the country at the time and had his date changed to today. He has now been rebailed until the date of Bradley's next appearance.
Speaking at Uttoxeter yesterday, Brooks said: "The police have changed the date to 13 April, which is the same day as Brad goes, so I suppose that is sensible. I had asked for the change of date to tomorrow because I was going away so I can't complain they've switched it now.
"Another couple of weeks won't matter anyway. I am sure everything is going to be all right."