Israeli police have arrested several senior executives from Bezeq, the country's biggest telecommunications company, as part of a probe investigating the company's ties to Israeli Prime Minister Benjamin Netanyahu.

New information revealed by the Israel Securities Authorities (ISA) led to the arrest of the officials, which include two close associates of Netanyahu - but a gag order in place has not allowed for further details to be released.

Investigators are looking into allegations that the telecommunications giant received benefits for providing positive media coverage of the prime minister.

Netanyahu's associate Shlomo Filber, director-general of Israel's communications ministry, is accused of providing Bezeq with favourable treatment. Filber is alleged to have provided Bezeq with confidential documents.

The corruption case, known as case 4,000, is the fourth of its kind in which Netanyahu is a suspect. As of Sunday, both the police and the ISA are working together on the case.

The investigation is also looking into Netanyahu's relationship with Shaul Elovitch, the controlling shareholder of Bezeq.

The telecommunications company also owns the Israeli news website, Walla.

According to the Israeli daily, Haaretz, Walla's chief executive is expected to be a key witness in the Bezeq case.

Last week, Israeli police recommended the incitement of Netanyahu for bribery.

This recommendation is at the more serious end of the spectrum of charges expected to be levelled against Netanyahu in two criminal investigations that have been ongoing for more than a year.

Some of the biggest charges the Israeli police is accusing him of include Netanyahu accepting gifts from wealthy businessmen worth hundreds of thousands of dollars.

In another case, police allege that he tried to strike a deal with Israel's second largest newspaper, Yedioth Ahronoth.

His wife and the country's first last, Sara Netanyahu, has been questioned over allegations of using public funds for private expenses as well.

Netanyahu, who has denied wrongdoing and pledged to stay in office regardless, has been questioned several times by police since the start of 2017.