"The Iranian authorities' recognition of their guilt for the plane crash that claimed the lives of many citizens from a number of states is an important decision," Tokayev wrote on Twitter.
The Kazakh president added that all parties should be more understanding of the given situation in order to reduce tensions, which civilians are also victims of.
On Wednesday, a Ukraine International Airlines plane crashed in the vicinity of Tehran’s Imam Khomeini International Airport shortly after takeoff. All 176 people on board were killed.
On Saturday, Iran admitted that the Ukrainian plane had been unintentionally shot down by the country's military, who confused it for a hostile target.