Four days after a ceasefire was meant to come into force in Syria, residents in the city of Homs have reported heavy bombardment from government forces.
The Syrian Observatory for Human Rights, based in the UK, claimed shells were being fired at a rate of one per minute.
After hours of salvoes, activists said three people were killed in the Khalidiya, Jobar and Qusour districts of Homs.
There have been repeated clashes reported in those areas between armed opponents of President Assad and his forces over the past two days.
State television quoted a Syrian security source saying ‘terrorist groups’ had stepped up their action since the ceasefire was supposed to take hold, causing a large loss of life with dozens more attacks.
Independent verification is virtually impossible. International news organisations have largely been kept out of Syria.