In September 2020, Tokayev spoke before the UN General Assembly saying that the decision was driven "to fulfill a fundamental right to life and human dignity." Last year, the oil-rich country joined the UN's International Covenant on Civil and Political Rights, a multilateral treaty included in the International Bill of Human Rights.
The presidential statement, released online, said that Tokayev signed off on parliamentary ratification of the Second Optional Protocol. This document commits signatories of the UN treaty to the abolition of capital punishment.
The UN convention stipulates that capital punishment may only be used in exceptional circumstances, such as war crimes or terrorist acts.
Reprieve for convicted terrorists
While the former Soviet republic has not carried out an execution in almost two decades, death sentences have continued to be handed down to those convicted of serious crimes.
However, since the mid-1990s, women, minors and those over the age of 65 have been excluded from the death penalty, according to a report by rights group the Open Dialogue Foundation.
One of the last death sentences handed down was to mass murderer Ruslan Kulekbayev who shot and killed eight police officers and two civilians during a rampage in Kazakhstan's largest city Almaty in 2016. He will now serve a life sentence instead.
The last state-sanctioned executions carried out in the country were on May 12, 2003, when 12 people were put to death by firing squad.
Amnesty report indicates big fall in executions around world