Sunni militants

Iran 'foils plot by Sunni militants to bomb Tehran'

The ministry said members of an "anti-Islamic terrorist takfiri group" had been arrested and explosives seized.

The intelligence ministry gave no further details about the suspects.

"Takfiri" is a term used by officials in Shia Iran to describe Sunni extremists who declare other Muslims as apostates deserving of death.

Iran is currently helping both the Syrian and Iraqi governments battle the jihadist group, Islamic State (IS), which considers Shia to be infidels for their veneration of the Prophet Muhammad's family and other beliefs and practices.