March 14 supporters are holding several meetings and conferences in Beirut and the northern port city of Tripoli in support of Caretaker Premier Saad Hariri.

More than 500 personalities, including doctors, engineers, lawyers and academics will hold a meeting at the Quality Inn Hotel in Tripoli.

The United States on Wednesday urged "all those wishing to deliver goods to do so through established channels so that their cargo can be inspected and transferred via land crossings into Gaza."

"As we continue to make clear to involved parties, mechanisms exist for the transfer of humanitarian assistance to Gaza," the U.S. State Department said in a statement.