Syria's Foreign Ministry has dismissed as "null and void" U.S. accusations that President Bashar Assad's government is producing and using "new kinds of weapons" to deliver deadly chemicals despite committing to abolish its program in 2013.

The ministry said in a statement on Saturday that Syria confirms the American statements are "nothing more than lies" based on the accounts of what the Trump administration called its partners on ground.

Syria also says that reports by Western-backed media outlets about Damascus using chemical weapons "is a new version of U.S. and Western desperate intentions to create" an excuses to attack Syria.

President Donald Trump has not ruled out additional military action to deter attacks or punish Assad, administration officials said earlier this week, although they did not suggest any action was imminent.