A series of attacks and suicide bombings against Syrian security offices in two districts of Homs have caused many casualties.
A war monitor says at least 42 people have been killed. Many others are reported to have been injured.
The head of the city’s military intelligence is said to be among the dead.
Both official government media and a foreign-based monitoring group – the Syrian Observatory for Human Rights – have reported the attacks. State television reported that clashes had rocked the districts of al-Ghouta and al-Mohata before three suicide bombers detonated their explosives at each place.
The attacks have been claimed by the former wing of al-Qaeda in Syria. Previous attacks in Homs have been carried out by the so-called Islamic State.
In recent months several bombings have targeted Syrian cities held by President al-Assad’s government.