Iranian authorities on Tuesday executed two men convicted of belonging to the Islamic State (IS) group, according to the judiciary’s official news website, Mizan Online.

The report identified the men as Mohiyodin Abdollahi and Hossein Palani, saying they were hanged after the Supreme Court upheld their death sentences.

Mizan Online said the pair had been convicted of planning terrorist attacks in Iran and sentenced to death on charges of “armed rebellion against the Islamic Republic.”

The judiciary did not disclose when the suspects were arrested or provide details of the legal proceedings that led to their convictions.

The Islamic State group has claimed responsibility for several attacks in Iran in recent years, targeting both civilians and security institutions.

Iran carries out more executions annually than any country except China, according to human rights organisations, including Amnesty International.

The executions come amid an increase in the use of the death penalty in Iran since the outbreak of the regional conflict triggered by US-Israeli strikes on the country on February 28.