MK Oren Hazan (Likud) was questioned under advisement on Sunday at the Anti-Fraud Unit of the police investigation and intelligence department, Lahav 433.
Hazan is suspected of attacking the director of the Ariel municipality, Avi Ezer, and of misconduct at a public place.
Attorney-General Yehuda Weinstein had to authorize the police to relaunch the investigation into the incident because Hazan has since been elected to the Knesset and as a member of Knesset has immunity.