The bodies of four convicted drug traffickers are driven out of a prison in Central Java, Indonesia early Friday morning .
The accused- three Nigerians and one Indonesian- had been sentenced to death as part of the country's war on drugs.
Fourteen prisoners, mainly foreign drug offenders, were executed last year causing diplomatic outrage.
Rights activists and governments have again called on Indonesia to abolish the death penalty, but the country's attorney-general said their rule of law needs to be respected.
"I've only heard of appeals, and I don't feel like I was pressured," he told Reuters on Friday. "We have to enforce and respect the rule of law in our country."
Ten additional executions scheduled for later on Friday have been delayed.
Around 150 people are on death row in Indonesia, including drug traffickers from the Philippines, France and Britain.