Iran said Sunday it has executed two members of the exiled opposition group Mujahedeen-e-Khalq after convicting them of carrying out attacks on public and civilian infrastructure, Associated Press reported.

The judiciary’s official news website, Mizan Online, reported that Behrouz Ehsani Eslamlou and Mehdi Hasani were hanged on Sunday morning after being found guilty of using improvised mortar launchers to target residential areas, educational institutions and government buildings.

The report said Eslamlou had a long history with the group, dating back to the 1980s. He was previously imprisoned, rejoining the group after his release, according to Associated Press.