Human rights groups are calling on Indonesia to halt further executions immediately, after four people faced the firing squad overnight and another 10 were granted a last-minute reprieve.
"The injustice already done cannot be reversed, but there is still hope that it won't be compounded," Rafendi Djamin, Amnesty International's director for South East Asia and the Pacific, said in a statement on Friday.
Amid heavy rain, just before 1am (4am AEST) on Friday, Indonesian man Freddy Budiman, and Nigerians Seck Osmane, Michael Titus Igweh and Humphrey Jefferson Ejike Eleweke were shot by a firing squad at the notorious Nusakambangan island prison.
Another 10, including Indonesian woman Merry Utami, who were also listed to face the death penalty, having been held in isolation on the island this past week, were not executed for reasons yet unknown.
But Noor Rachmad from the Attorney General Office said on Friday morning that they would face the death penalty at a later date.
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The prison island in Central Java known as the Alcatraz of Indonesia is the same place where Australians Andrew Chan and Myuran Sukumaran were executed, along with six others, in April last year.
Had all 14 people been executed overnight, the former lawyer for the Australian men and anti-death penalty advocate Dr Todung Mulya Lubis said it would have been the largest mass execution in Indonesian history.
Australian barrister Julian McMahon, who also represented Chan and Sukumaran, tweeted: "After 15 months of govt hype, today 4 out of 14 were shot in Indonesia. 10 were very suddenly 'not shot'. The whole sad circus is shameful."
Australian artist Ben Quilty, a friend of the two dead Australians, lashed out at Indonesian President Joko "Jokowi" Widodo, tweeting: "There is a swathe of violence across the planet. You @jokowi are driving indonesia backwards."
Community legal aid organisation LBH Masyarakat also took to the social media platform in the wake of the executions, expressing its deep sadness.
"We lost another client, another friend: Humphrey Jefferson. Another dark day for us ... very dark."
The Nigerian's lawyer Ricky Gunawan, who has previously described the Indonesian legal system as "corrupted and broken", said it was "outrageous".
But for some, it was a moment of relief.
Sitoli Ali, the wife of Pakistani man Zulifqar Ali who was not executed at the last minute, said simply "Thank you Jokowi" as she was driven away from the prison on Friday morning.
