BEIRUT— Twin blasts Saturday near holy shrines frequented by Shiites in the Syrian capital of Damascus killed at least 40 people and wounded over 100, most of them Iraqis, according to Syrian and Iraqi officials.

There was no immediate claim of responsibility for the attacks. Islamic State militants have carried out similar attacks before against Shiite shrines in the Syrian capital and elsewhere. Extremist Sunni groups, such as the Islamic State, view Shiites as apostates and consider shrines a form of idolatry.

Syrian State TV aired footage from the scene showing blood-soaked streets and several damaged buses in a parking lot, apparently where the explosions went off near Bab al-Saghir cemetery.

The cemetery is one of Damascus’ most ancient and is where several prominent religious figures are buried.

Interior Minister Mohammed al-Shaar visited the wounded in local hospitals. He said 40 were killed and 120 were wounded. He said the attacks targeted civilians, including Arab visitors, who were touring the area’s shrines.

Iraq’s Foreign Ministry said that at least 40 Iraqis were killed and 120 wounded.

Ministry spokesman Ahmed Jamal said buses carrying Iraqi pilgrims to the shrines were targeted. He said a crisis response team has been formed to expedite the identification and transport of the killed and wounded.

U.N. Resident and Humanitarian Coordinator for Syria Ali al-Za’tari condemned the attacks, saying “targeting civilians is a terrorist act, condemned and rejected by anyone who has a conscience in this world.”