Illinois Democrat candidate Robert Zwolinski was attacked by supporters of Democrat Cynthia Soto last week.

The attackers smashed a bottle over his head and put a staple in his forehead.

Zwolinski was assaulted outside his campaign office in Chicago.

On Thursday Rep. Cynthia Soto’s daughter and her boyfriend were arrested for the attack.

ABC7 reported:

Illinois Rep. Cynthia Soto’s daughter and another campaign volunteer are accused of attacking aspiring politician Robert Zwolinski, who ran against Soto in the Democratic primary this week. TRENDING: RUTH BADER GINSBURG DEAD! Supreme Court Justice Dies at Home Surrounded by Family Jessica Soto and Bradley Fichter, both 26, are each charged with three felony counts of aggravated battery in connection with the assault on the 30-year-old man. The suspects’ attorney, Frank Avila, said his clients were volunteers for Cynthia Soto’s re-election campaign and that Jessica Soto is the incumbent’s daughter.

Illinois Rep. Cynthia Soto’s daughter and another campaign volunteer are accused of attacking aspiring politician Robert Zwolinski. (ABC 7)