Speaking at a press conference on anti-terrorism measures, Bolani said that Iraqi courts have sentenced 14,500 people accused of terror crimes. Those who aren't sentenced to die have been given life sentences, he said.
"The government is trying to serve justice," Bolani said.
Between 2005 and 2009, 230 people have been executed, Iraqi government spokesman Ali al-Dabbagh said in July.
The death penalty was reinstated following a brief moratorium following the 2003 US invasion of Iraq.
Iraq's prime minister Nuri al-Maliki supports the death penalty, while president Jalal Talabani opposes its application.