Israeli Prime Minister Benjamin Netanyahu was questioned once again in a corruption probe, police announced on Friday. The premier was questioned at his official residence in the context of investigations by the national economic crimes unit, a police statement in Hebrew said. It gave no further details. Two police vehicles arrived on Friday at Netanyahus residence while protesters at the entrance waved a large banner reading "crime minister" and chanted slogans calling for justice. Investigators interviewed him over allegations of corruption involving local telecoms giant Bezeq and its largest shareholder, Shaul Elovitch, according to Israeli media reports. It was the 12th time Netanyahu has been questioned in various cases, either as a suspect or a witness. In the Bezeq case, Netanyahu is alleged to have sought favorable coverage from another Elovitch company, the Walla news site, in exchange for government policies that could have benefited the moguls interests to the tune of hundreds of millions of dollars. Two Netanyahu confidants have been arrested in the case and have turned state witnesses. After a previous round of questioning in July, Netanyahus office said there was no such trade-off. "Prime Minister Netanyahu has never made a deal with Elovitch in exchange for supportive coverage," it said, adding that the Walla site had consistently covered the premier "in a hostile manner." Elovitch was arrested in February along with six other people including Nir Hefetz, a former media adviser to the Netanyahu family. In addition to the premiership, Netanyahu also held the communications portfolio between November 2014 and February 2017, covering the run-up to the March 2015 elections, when he is alleged to have made the deal with Elovitch. Netanyahu was interrogated for more than five hours in July, reportedly over the same affair. In a separate case, his wife Sara was charged in June with misusing state funds to buy catered meals costing $100,000 (85,000 euros) by falsely declaring there were no cooks available at the premiers official residence. In February, police recommended the premier be indicted in two cases, though the attorney general has yet to decide whether to do so. Netanyahu, prime minister for around 12 years in total, has maintained his innocence in all of the cases, talking of a "witch hunt" and saying he was determined to stay in his job. He would not be legally obliged to resign if charged. So far, his coalition partners have stood by him despite the allegations, but the investigations have gradually ratcheted up speculation over whether he will eventually be forced from office.