At a ceremony in Riyadh, Putin and his host, Saudi King Salman, penned a string of multi-million-dollar investment contracts targeting the aerospace, culture, health, advanced technology and agriculture sectors.
The National Iranian Tanker Company, which owns the ship, said the hull of the Sabiti suffered two separate explosions off the Saudi coast, adding they were "probably caused by missile strikes".
There was no word from Saudi Arabia on the reported attack and Saudi officials did not immediately respond to requests for comment.
The sources said Khan would travel to Tehran first where he would meet Iranian President Hassan Rouhani on Sunday. After the meeting, the prime minister will fly to Riyadh where he will meet the top Saudi leadership.
Most of the refiners are getting the crude grades that they want, the sources said on Thursday, adding that there was no request from state-owned oil company Saudi Aramco for them to change grades.
Saudi Arabia has managed to maintain supplies to customers at levels before the attacks by drawing from its huge oil inventories and offering other crude grades from other fields, Saudi officials have said.
Mohammed bin Salman said a war would be catastrophic for global growth.
Saudi Arabia said it would impose fines for violations of "public decency", including immodest clothing and public displays of affection
Saudi Foreign Minister Ibrahim al-Assaf took the stage on September 26 at the UN General Assembly and urged world leaders to cut off Iran's financial resources.
The CIA has also reportedly said the killing was likely ordered by Saudi Prince Mohammed bin Salman.
A source, briefed on the latest developments in the September 14 attack on Saudi oil facilities, told Reuters Saudi Arabia had restored around 75% of crude production lost.
Brent crude futures gained $1.78 to $65.38 a barrel by 1219 GMT, while U.S. West Texas Intermediate crude was up $1.28 at $59.39 a barrel.
US Secretary of State Mike Pompeo has described the weekend strike that initially halved Saudi oil output as an act of war and has been discussing possible retaliation with Saudi Arabia and other Gulf allies.
On his way to Saudi Arabia for an on-the-spot assessment, US Secretary of State Mike Pompeo used very strong words to describe the attack. He called it an "act of war" without divulging USA's future course of action.
The FO said that Imran Khan has been in regular contact with the Saudi Crown Prince Mohamed bin Salman on the Kashmir issue.
'This was an Iranian attack,' he told reporters on his plane before landing in the western city of Jeddah, calling it 'an act of war'.
Oil prices saw a surge after drones attacked two plants of Saudi Aramco
Iran has sent the US a diplomatic note denying any role in attacks on Saudi oil installations and warning of a response to any action, reports suggest
Australia, Bahrain and the United Kingdom already have joined the mission.
Production could be fully online within two to three weeks and the kingdom was close to restoring 70% of the 5.7 million barrels a day lost after the attacks, a top Saudi source briefed on the latest developments told Reuters.
Shraddha Sharma chats with Moneycontrol's Ruchi Agrawal to find out how these attacks could affect earnings and stock prices in India.
Around 50 percent of the Kingdom’s output is at stake.
Experts suggest that geopolitical tensions, weakness in rupee and expectations of Fed rate cut will continue to support bullion prices in near future.
Coalition spokesman Colonel Turki al-Malki said that an investigation into Saturday's strikes, which had been claimed by the Iran-aligned Houthi group, was still going on to determine the launch location.
The world could see a temporary shortage of 5.7 million barrels per day, which is five percent of the global output, due to the attack.