Benjamin Netanyahu has fallen ill as he faces accusations of bribery, fraud and breach of public trust in his own country.
His personal physician has said that Netanyahu is suffering from lack of rest following an illness he contracted around two weeks ago.
According to a Jewish People Policy Institute survey of 3,000 respondents, 97 percent of Israelis Jews say they either. Defense Minister Avigdor Lieberman will fill in for Netanyahu if he is unable to attend.
Police later said that Monday's questioning lasted "several hours" but did not elaborate.
The leader has denied any wrongdoing and claims the recommendations "will end with nothing".
On Monday, Netanyahu and his family were questioned by police as part of an investigation into one of the corruption cases in which the he is a prime suspect. That decision could be months away.
So far his coalition partners have stood by him despite the allegations and Netanyahu is not obliged to step down even if officially charged.
Critics accused Netanyahu of seeking to bring down the government to prompt fresh elections, with opinion polls showing his party likely to remain the largest in new elections.