MADRID (AP) — Police arrested four people at a bull run festival in northeastern Spain for allegedly attacking two animal rights activists who tried to video the event, an official said Monday.

Animal rights group AnimaNaturalis said in a statement that director Aida Gascon and colleague Yasmina Moreno had been pounced on and attacked Friday in the town of Mas de Barberans in the Catalonia region after planning to video a correbou, in which bulls are set loose in a ring with flaming balls of tar or wax attached to their horns.

A police official speaking on condition of anonymity because of office policy said three men and one woman were arrested on suspicion of assault and damaging property, and would appear before an investigating judge within hours.

National TV channel La Sexta broadcast a video showing the women being attacked and stripped of their camera.

In the melee, one man was seen climbing from the bullring into the stands while other crowd members approached from the sides. Eventually, one man was seen hurling the camera forcefully to the ground.

Cheers and clapping erupted from onlookers as the camera smashed into the bullring's raked sand.

"We have attended these festivities for the past five years, just to monitor their compliance with the law, but had never suffered such violence," Gascon said in a statement from AnimaNaturalis.

Gascon said the attack she had experienced wouldn't stop her from documenting future correbou events.