After being strangled, the journalist's body was then dismembered and disposed of, the chief prosecutor's office added.
Celik also said it was not possible that Saudi officials had still not found the journalist's body after almost a month of investigations.
This was carried out as part of a premeditated plan, according to a statement by the chief prosecutor's office.
New Zealanders turn out to see royals despite rain and wind
Their last stop on the tour was Rotorua on New Zealand's North Island, a town known for its geothermal activity and Maori culture. Dressed casually in jeans and rainboots they got stuck into the activities and games, which included planting a Kowhai tree.
A well-known critic of the Saudi authorities, the journalist Jamal Khashoggi went missing on 2 October.
During the visit, he met high-ranking Turkish officials and inspected the Saudi consulate premises.
Following the global outrage over the macabre circumstances on Jamal Khashoggi's case, the Saudi public prosecutor reversed its statement and declared that the killing was premeditated.
Michelle Bachelet said she welcomed steps taken by the Turkish and Saudi government to probe his death, but given Saudi Arabia's apparent involvement in the slaying, "the bar must be set very high".
Turkish authorities have repeatedly accused Riyadh of causing hindrance in the ongoing investigations into the case by denying key pieces of evidence, including the whereabouts of the body.
PM Modi To Unveil World's Tallest Statue In Gujarat Tomorrow
It will be more than 50 metres taller than China's Spring Temple Buddha, the world's current record holder, at 128 metres. After its grand inauguration on 31 October, the statue will be open for public visit from 3 November from 9am-6pm.
His fiancee was waiting for him outside.
Pompeo said last week that the United States had identified 21 Saudis whose visas would either be revoked or who would be ineligible for future visas and said that more action would come.
Mojeb was the first Saudi official to acknowledge that the killing was "premeditated" based on the results of Turkey's investigation.
Saudi Arabia admitted journalist Jamal Khashoggi died at the Saudi Consulate at Instanbul.
Steven Gerrard Interrupts Rossiter To Issue 'Warning' To His Own Players
If they're not with us right now, I'll find them". "The only way to do that is to go and win this game tomorrow". The Light Blues had only one of 15 shots on target and Gerrard admitted that his side were not good enough.
"Because the chief prosecutor is working to save crown prince by covering up the investigation rather than shed light on the murder".