Waluyo who disclosed this on Monday in Jakarta during a parliamentary hearing, said that his office is preparing to execute 18 convicts, after July 6, the Eid al-Fitr Muslim holiday, which ends of the holy month of Ramadan even as the government planned to execute 30 death-row convicts in 2017.
Meanwhile, the Justice Ministry said that those on the death row include Mary Jane Veloso from the Philippines, Lindsay Sandiford from Britain and Frenchman Serge Atlaoui.
The ministry recalled that in 2015, Indonesia executed 14 convicts; all but two of them were foreigners, in a move that drew international condemnation.
Under Indonesian law, each convict would face a squad of 10 gunmen.
Indonesian President, Joko Widodo, who took office in 2014, has taken a tough stance against drug trafficking, saying that the country is facing a drug emergency.