US President Donald Trump has said a lawmaker's claim he made a soldier's widow cry is "totally fabricated".

Congresswoman Frederica Wilson said she was shocked by the president's comments to the bereaved wife of a fallen soldier.

The Democratic lawmaker claimed he told the widow: "He knew what he was signing up for, but I guess it hurts anyway."

Sgt La David Johnson was among four US special service troops killed in Niger by Islamist militants this month.

Mr Trump has already been criticised for not contacting the families of the dead servicemen right after the fatal ambush on 4 October.