Prominent horse trainer Saab Hasan has described his distress after he was pepper sprayed and denied entry at Flemington racecourse by police as he attempted to return his horse, Red Gucci, to its stable.

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Hasan was making his way back from a meeting at Wangaratta where Red Gucci won in race three, arriving in Melbourne at 6pm before it took 45 minutes to get to the Smithfield Road entrance - the only gate the trainer could access.

He then explained that he was 300 metres from the stable when a police officer informed him he could go no further as the space was allocated for Ubers and taxis who were picking up the vacating crowd.

When Hasan presented identification and told the police officer he was a trainer, he was told he would be arrested if he didn't move his car.

''He still denied me access and said if I didn’t move the car, he would arrest me,'' Hasan told SEN Breakfast.

''I said that’s uncalled for, I said sir, given the fact I’m only trying to unload my horse, it was starting to get a bit agitated, and I said the last thing we want is the animal activists down our necks and another horse getting injured.

“He said to either move the car or I’ll arrest you. I said, if you don’t let me go into the course, I have no option but to unload my horse in the street, which is dangerous, but for the horse’s welfare, I have to do it. I got out of the car to unload the horse and he pepper sprayed me.

“The sad part about it is not one officer offered me assistance. I had a horse in my hand and my eyes were burning, and not one officer offered me assistance. When I approached the one who was in charge, he said, well what do you want us to do about it?

“I have nothing against the Victoria Police, but clearly this gentleman got it wrong on the day. I went to Moonee Ponds police station and lodged a formal complaint.”

Hasan said that no ''common sense'' was used by the officer who had no idea about horses.

“He was being arrogant,” Hasan said of the officer.

“I didn’t threaten him, I didn’t abuse him or use unforeseen language.”

A police investigation is underway over the alleged incident.