Iran has executed three men convicted of involvement in a suicide bombing at a Shia mosque in the southeast of the country this week.

At least 25 people were killed in Thursday's bombing.

‘They confessed to illegally bringing explosives into Iran and giving them to the main person behind the bombing,’ the official news agency IRNA quoted the judiciary public relations chief, Hojatoeslam Ebrahim Hamidi as saying.

He said the trio had been arrested before Thursday's bombing but had confessed that they had provided the explosives for the mosque bombing.

‘They were tried and they had court-appointed legal representation,’ Mr Hamidi said.

‘They confessed to illegally bringing explosives into Iran and giving them to the main person behind the bombing,’ he added.

The public execution is reported to have taken place near the mosque where the bombing took place.