Five people who police say are members of a religious cult were arrested on Monday on suspicion of fatally beating a young woman in a McDonald's restaurant in Shandong province.

The bloody attack, which triggered nationwide outrage after a video of the beating went viral online, occurred on Wednesday night in Zhaoyuan after the woman refused to give her cellphone number to the group, Shandong police said.

The woman, identified only by her surname Wu, was 35 years old and had a 6-year-old child, the police said.