Indonesia's Attorney General HM Prasetyo says Wednesday's execution of eight people including two Australians went "perfectly."
"All shots were done perfectly. These executions were carried out smoothly and in order — much better than the first round of executions in January," Prasetyo told reporters. "The result of the second execution was better, more orderly and more perfect than the last,"
On January 18, Indonesia executed four men and one woman. It was reported at the time that the shortest period from shooting to death was an agonising six minutes.
Prasetyo also noted that the bodies of the prisoners had been treated more "humanely" this time.
Prasetyo also confirmed that the eight men were killed together by a 13-man firing squad.
The shots were fired at 3.35am Wednesday morning, and all prisoners were declared dead 30 minutes later the Attorney General said.
It has been reported that Australians Andrew Chan and Myuran Sukumaran refused the offer of blindfolds, and stared down the firing squad as they were shot.
The executed men sang hymns and remained calm in the moments before their deaths.
Pastor Karina de Vega, who provided spiritual guidance for Brazilian man Rodrigo Gularte, witnessed the executions and told reporters the men died with dignity and all refused the offer of blindfolds.
"They were praising their god," Pastor de Vega said. "It was breathtaking. This was the first time I witnessed someone so excited to meet their god.
"They sang one song after another. Praising God. They sang a few songs together, like in a choir. The non-Christian I believe also sang from his heart. It was such an experience."
Outside the prison compound, the condemned men's families also sang as they lit candles for their loved ones.
Australia has recalled its ambassador to Indonesia following the executions.
Prime Minister Tony Abbott yesterday described the men's deaths as "cruel and unnecessary."
"The Government had hoped that Indonesia would show mercy to these young men, who have worked hard since their arrests to rehabilitate themselves and improve the lives of other prisoners," Mr Abbott said yesterday.
But Indonesia isn't backing down.
"We are fighting a war against horrible drug crimes that threaten our nation's survival," Mr Prasetyo said. "I would like to say that an execution is not a pleasant thing. It is not a fun job. But we must do it in order to save the nation from the danger of drugs."
Indonesian President Joko Widodo says Australia must respect his nation's sovereignty.
"We're ready to respect the sovereignty of other countries as well," he said yesterday.
Australians Chan and Sukumaran were executed for the role in a drug syndicate.
The Australians were sentenced to death in 2006 for their role as ringleaders of a drug syndicate which attempted to smuggle 8.3kg of heroin into Australia in 2005.
The other men were executed for their roles in varying crimes ranging from drug offences to rape and murder.
A ninth condemned person, Mary Veloso, was given a last-minute reprieve when it a woman handed herself in to police in the Philippines, indicating she had tricked Veloso into smuggling drugs into Indonesia.