Diplomats are trying to ensure a fragile ceasefire in Syria holds, as violations continued to be reported in parts of the country.
ITV News Correspondent Dan Rivers, reporting from Damascus, said a loud explosion could be heard in the east of the Syrian capital on Monday.
The US-led coalition carried out operations against Islamic State militants in Syria and Iraq on Sunday.
The coalition's military forces used ground-attack, fighter and remotely-piloted aircraft against the targets.
In Syria, 12 attacks were carried out, and in Iraq, forces also conducted a further 12 strikes supported by Iraq's government.
The targets included gas and oil plants, buildings, vehicles and sniper positions.
The attacks were part of an ongoing campaign to destroy IS targets and limit the group's ability to undertake further terror operations.
Although there is a temporary "cessation of hostilities" in Syria, the internationally-backed agreement does not apply to the militant Islamist groups of Islamic State and al-Nusra.
All aircraft returned to their base safely.
Syrian journalist Humam speaks to ITV News, shining a light on life for those still living within the country's devastated borders.
Despite the ceasefire, ITV News has witnessed airstrikes around Homs and seen shelling in Damascus.
An 86-year-old woman with a broken leg was able to get medical treatment as a result of what is at best a shaky truce.