The Syrian army says it is observing a partial and temporary truce with rebels known as a “regime of calm”, apart from in the divided city of Aleppo.

The truce announced by Syrian forces became operational in two areas an hour after midnight local time yesterday.

A statement said it would last for 24 hours in Damascus and the Eastern Ghouta region outside the capital. Further air attacks have been carried out on parts of Aleppo – a key battleground in the Syrian civil war.

Strikes hit rebel-held districts for a ninth day, with at least three areas reported to have been targeted, causing an unknown number of casualties.

The truce is due to last for 72 hours in the northern countryside of Latakia province. There has been no explanation as to why the halt in fighting is only temporary.