Five security guards have been arrested on suspicion of beating a customer at a popular bar and nightclub in Petaluma. The men, all between the ages of 25 and 31, were arrested after an incident at Jamison’s Roaring Donkey on Saturday night. All five security guards are facing the charges of battery and criminal conspiracy. The management at Jamison’s Roaring Donkey has not commented about the alleged assault. But, police say the security guards were throwing a man out of the bar after an argument. In the process, they allegedly hit him repeatedly and forced him to the ground, then continued to assault him on the sidewalk outside.