Whose friends are you? Those who bring Syrians freedom, Are you human beings?

Nearly two dozen people have been killed and many others injured in a terrorist explosion inside a mosque in the Syrian capital, Damascus.

According to Syrian sources, a bomber blew himself up inside al-Eman Mosque in the Mazraa neighborhood of the capital on Thursday.

Top Sunni cleric Mohammed Saeed Ramadan al-Bouti, in his 80s, is reported to be among the dead.

The victims are believed to be supporters of President Bashar al-Assad. According to Syria’s official news agency SANA, 14 people were killed and 40 others were injured. Some other sources, however, put the death toll at 20.

Foreign-backed militants fighting against the Syrian government also fired mortar shells at a sports stadium in the western city of Idlib. The attack caused only material damage.

Two Syrian civilians were also killed and more than 20 others injured in a terrorist car bombing in the western city of Homs, SANA reported.

Syria has been experiencing unrest for two years and many people, including large numbers of army and security personnel, have been killed in the turmoil.

Several international human rights organizations have accused the foreign-sponsored militant groups of committing war crimes.