However, Saudi media outlets confirmed the attack, saying that an attack by a boat laded with explosives near Aramco facilities in Jizan, south of Saudi Arabia.
Carrying out a large global bond issue would also compel Aramco to reveal much of the same financial and business information as an IPO prospectus, bringing greater transparency to the world's largest oil producer.
Salman's plans to attract foreign investment were grounded in a strong PIF, which was itself to be heavily funded by Aramco's public offering, expected to raise at least Dollars 100 billion by itself even though it was to have been for only 5 percent of the company.
"He's been very good at creating expectations but not as good at managing expectations", said Dorsey.
Saudi Aramco ranks as the world's largest oil and gas business.
"The reform process has to be judged on its entirety and over a period of years but this will negatively affect perceptions of its credibility overall, considering that the IPO was promised in such high-profile terms", said Richard Segal, senior analyst at Manulife Asset Management in London.
The statement came after Reuters reported on Wednesday that Riyadh had called off the domestic and global listings, citing sources it didn't identify.
Is this not the goal of the Vision 2030 plan, and the Crown Prince's aspiration of a diversified Saudi economy?
Mr Callen said that while a listing delay would not alter the kingdom's overall economic outlook, it would mean reduced revenues for sovereign wealth fund the Public Investment Fund.
Suspicions that the IPO may never see the light of day first surfaced nearly a year ago, as sources close to the deal suggested that the plans to list in the second half of 2018 was overly ambitious, with several issues to be settled before the listing could take place.
He said the IMF's projections for Saudi economic growth to accelerate in coming years were based on expectations for a broad range of reforms to continue, and did not include the impact of the initial public offer of Saudi Aramco shares. Aramco's announcement this month that it is in talks to acquire a major stake in Sabic, the region's biggest chemicals company, has also cooled off the rush to list the energy company.
At market prices, the sale of the PIF's entire 70 percent stake in SABIC to Saudi Aramco would raise about $70 billion.