IRNA -- British Foreign Secretary Boris Johnson sympathized with Iranians on Tehran terrorist attacks.

Johnson said in a tweet, 'Our sympathies go with the people of Iran following the despicable terrorist attack. It is time for the world to unite against this scourge.”

Earlier on Wednesday, two simultaneous attacks hit the parliament and Mausoleum of Imam Khomeini in the south of Tehran, killing 13 and wounding 52.

Security sources said that one of the suicide bombers in Imam Khomeini’s Mausoleum was shot before taking any action, but another one detonated his suicide vest. And from the three terrorists in Majlis (the Iranian Parliament), one could blow himself up, but the other two were shot dead by security guards.

Daesh (the ISIS terrorist group) claimed responsibility for the attacks.