Separately, Istanbul's chief prosecutor called 28 more Saudi consulate staff, including Turkish and foreign nationals, to give testimony on Monday in the Khashoggi's case, TRT World News said in tweet, citing unidentified sources familiar with matter.
The man in the video, identified by the official as Mustafa al-Madani, was allegedly part of what investigators have said was a hit squad, sent to kill the journalist at the Saudi consulate during a scheduled appointment to get papers for his upcoming wedding.
US President Donald Trump said on Saturday he is not satisfied with Saudi Arabia's handling of Mr Khashoggi's death and said questions remain unanswered. Saudi Arabia has threatened to retaliate against any punitive action, but analysts say that wielding its main weapon - oil production - could backfire, putting the prince's economic goals even further out of reach.
"This was an operation where individuals ended up exceeding the authorities and responsibilities they had".
A Saudi source would not confirm or deny the report, but maintained that Khashoggi was not intentionally killed.
"The Saudi account has been met with widespread worldwide skepticism and allegations of a cover-up".
Saudi Arabia said 18 Saudi suspects were in custody and intelligence officials had been fired.
Turkish police believe The Washington Post columnist was murdered and dismembered shortly after he entered the Saudi consulate in Istanbul on October 2; Turkish media have reported that a 15-man hit team was sent from Riyadh specifically for the assignment.
"First, we condemn this act in the strongest terms", the German leader said. Economy Minister Peter Altmaier underlined Monday its position that "we won't at this point approve any further arms exports because we want to know what happened".
Merkel had said Sunday that "when it comes to our already limited arms exports. they can not take place in the current situation". The journalist has relatives in Saudi Arabia and his three children who hold USA citizenship.
Migrants halted after storming Guatemala-Mexico border
It said Mujica attacked immigration agents, as well as local and federal police, after he was asked for his identification. The caravan arrived at the border in southern Mexico on Thursday but turned around Friday, the Associated Press reported .
Irish border issue could sink Brexit deal, says European Union negotiator Michel Barnier
May said her proposal was an attempt to solve the issue of the Irish border, which has stumped negotiators for more than a year. But even an extension would not get rid of the EU's insistence that such a backstop must be agreed to secure a deal.
Railway officials rush to Amritsar train accident site, rescue operations underway
Revenue Minister Sukhbinder Sarkaria has been deputed to immediately reach Amritsar to oversee rescue operations. Thirty bodies had been removed from the site by Friday evening as relief work was being hampered by nightfall.
Al Jubeir said Khashoggi was approached by a "Saudi security team" when he entered the consulate and their account of what happened after that differed from that of Turkish officials, which prompted the Saudis to investigate.
But any direct challenge to Prince Mohammed's succession "may be destabilizing for the kingdom as a whole", said Cinzia Bianco, a London-based analyst for Gulf State Analytics.
Turkish officials believe Mr Khashoggi, a prominent critic of the Saudi government, was murdered by a team of Saudi agents inside the building. Our condolences go out to them.
Asked if he believed that version of events, Mr Raab replied: "No, I don't think it's credible".
"They told us that he left the consulate", Jubeir said.
In a speech on Sunday, Turkish President Tayyip Erdogan appeared to suggest he was getting ready to release some information about the Turkish investigation, and would do so at his weekly speech on Tuesday to members of his ruling AK Party.
"But Saturday, in an interview with The Washington Post, Trump said, "Obviously there's been deception and there's been lies".
Corker - who chairs the Senate Foreign Relations Committee - called for a "collective response" by the United States, Britain, France and Germany if an investigation reveals that the crown prince was behind Khashoggi's killing.
President Donald Trump says he needs to learn more about the killing of a Saudi journalist and will be working with Congress on the USA response.