Updated

Syria's state news agency says missiles have struck an air base in central Syria in the early hours of the day.

The agency said it was likely "an American aggression" but U.S. officials say the United States had not launched airstrikes on Syria.

Monday's missile attack followed a suspected poison gas attack on Saturday on the last remaining foothold for the Syrian opposition in the eastern suburbs of Damascus. At least 40 people were killed, including families found in their homes and shelters, according to opposition activists and local rescuers.

SANA reported that the missile attack on the T4 military air base in Homs province resulted in a number of casualties.

The U.N. Security Council planned to hold an emergency meeting Monday to discuss the chemical attack.