Aleppo air strikes
Evacuation of two pro-Assad Syrian villages under way
The evacuation began with ambulances ferrying out the sick, the Syrian Observatory for Human Rights war monitor reported.
Earlier, state television said successive blasts were heard in rural Hama province and that authorities were investigating the cause.
There was no comment from the Syrian army on the report that Qaryatayn, 120 km northeast of Damascus, had fallen.
The Syrian and Russian military have carried out many air strikes in Idlib and Aleppo provinces during the war.
He made the remarks in comments to French media that were published by the Syrian state news agency SANA.
A resolution welcoming the ceasefire was adopted unanimously by the 15-member Council, meeting in New York.
Russian President Vladimir Putin, a key ally of Syrian President Bashar al-Assad, announced the ceasefire on Thursday.
Russian jets stepped up strikes on several towns in Syria's rebel-held Idlib province and rural Aleppo.
The Syrian Observatory for Human Rights said about 10 shells had fallen in al-Hamdaniya district in southwest Aleppo.
Main dates in the battle for Aleppo after the Syrian army announced victory following the evacuation of the last civilians and rebels.
The military said it had brought the return of safety and security to the city of Aleppo, ending four years of rebel resistance.
The Syrian Observatory for Human Rights, a group that monitors the war, said Assad had control of Aleppo.
The Syrian army used loudspeakers to broadcast warnings to insurgents that it was poised to enter their rapidly diminishing area.
A rebel official based in Turkey said only about half of the civilians who wanted to leave Aleppo had done so.
The organisation says innocent men, women and children in that country are being slaughtered everyday.
The Syrian Observatory for Human Rights said the evacuation of the villages near Idlib had been postponed as a result of the incident.
Officials from the Syrian government or the military alliance fighting in support of it could not be reached for immediate comment.
Aleppo had been divided between government and rebel areas in the nearly six-year civil war.
There's been no sign of evacuations from two villages besieged by rebels in the neighbouring Idlib province.