Updated story
Ten people were hurt Saturday when a group of about 18 people wearing black hoodies and face-concealing bandanas entered a southwest suburban Chicago restaurant and attacked a group of diners with metal batons and hammers.
The attack happened around 12:45 p.m. at the Ashford House restaurant, a popular Irish restaurant, on 159th Street in Tinley Park, Ill., the Chicago Tribune reports.
According to Fox Chicago, the group -- described by witnessed as white and in their late teens or early 20s -- stormed into the restaurant and appeared to target one group of diners. One witness said they overheard the group chanting political slogans before entering the restaurants.
The attackers flipped over tables, broke many dishes and left several diners needing to get stitches. According to the Chicago Sun-Times, 10 were hurt in the incident, three of whom were hospitalized.
A Sun-Times follow-up story reports that the group of diners targeted by the attackers were white supremacists, according to police.
A long-time waitress at the restaurant described the scene to the Tribune as "the scariest … day of my life. They took out the whole restaurant. It was absolutely horrible."
Five of the attackers are now in police custody, though no charges have been filed as of early Sunday.
Police say the attackers knew who their targets were and that the incident was not a random act of violence, the Sun-Times reports. An investigation into the attack is ongoing.