Marciano urged the Knesset Ethics Committee onSunday to take steps against him following the violent incident in which he was involved.
In a letter to the committee, sent by his lawyer on Sunday, the Labor faction leader apologized to the guards and the public for his actions, saying he was "ashamed of his behavior."
The police said Marciano scuffled with guards at a nightclub in Herzliya late in the early hours of Thursday as he was exiting the premises.
One of the guards filed a complaint with the police against the Knesset member, who then issued his own complaint.
Labor MK Danny Yatom told Ynet that in the next faction meeting he would demand an explanation from Marciano for his "shameful behavior."
"If his explanation does not satisfy me I will demand his resignation from his post as chairman of the Labor faction in the Knesset," said Yatom.
Marciano declined comment on the police's decision to investigate the incident.