Beirut: The United States has delivered more than $32 million worth of military aid to the Lebanese army on Sunday to help it fight jihadist groups near the Syrian border.

The US ambassador to Beirut, David Hale, said in a statement the weapons – which included heavy artillery – would be used to "defeat the terrorist and extremist threat from Syria".

Workers unload artillery, part of a military donation from the US government to the Lebanese army, in Beirut on Sunday. Credit:Mohamed Azakir

"We are fighting the same enemy [as Lebanon], so our support for you has been swift and continuous," Mr Hale said.

The Lebanese army has fought regular battles with armed groups including militants linked to Islamic State and Nusra Front, an al-Qaeda affiliate, in areas near the Syrian border, most recently late last month when six soldiers were killed.