Irani carried out a mass execution of at least 29 people on Wednesday morning in two prisons located near the capital, Tehran, as the world was busy following news of a possible attack on Israel.

Twenty-six prisoners were executed in Ghezelhesar Prison and three were executed in Karaj Central Prison, according to Norway-based Iran Human Rights Organization (HRNGO).

"The Islamic Republic, by exploiting global attention on its tension with Israel, is currently engaged in mass killing prisoners and intensifying the suppression in Iran,” said HRNGO director, Mahmood Amiry-Moghaddam in a statement on Wednesday.

Of the 29 men executed, 17 were executed for murder charges, seven were on death row for drug-related charges and three on rape charges.

HRNGO also reported that the rights group had received reports of an additional two women being executed on Wednesday but was unable to confirm the report so far.

HRNGO further noted that at least 87 people have been executed in Iran in one month since the presidential elections on July 6. This brings the total number of those executed in 2024 to 338 as of Wednesday.

According to Amnesty International, Iran carried out 853 executions in 2023, marking the highest number in eight years. Amnesty International noted that 64 percent of the executions in 2023 were for crimes that did not warrant the death penalty under international law, including drug-related offences, robbery, and espionage​.

Since the alleged Israeli assassination of Hamas's political leader, Ismail Haniyeh, in Tehran last week, Iran has threatened to retaliate. Global powers have been intervening to calm tensions as fears rise of an escalation between the two archenemies.

In April, Iran launched its first-ever direct attack on Israel, launching a barrage of 350 missiles, rockets and drones, most of which were intercepted by Israel and a US-led coalition.

However, the threats from Tehran say this retaliatory attack would be far worse, while countries such as the US and Russia have been urging calm.