As Turkey's offensive in Syria entered its second week with new air strikes and artillery, Foreign Minister Mevlut Cavusoglu said it was "necessary for them (US) to immediately withdraw from Manbij", where Washington has a military presence, AFP reported.

Turkey launched operation "Olive Branch" on January 20 against the YPG in its western enclave of Afrin, supporting Syrian opposition fighters with ground troops and air strikes.

Turkey President Recep Tayyip Erdogan has threatened to expand the offensive against the YPG to Manbij, east of Afrin.

Relations between NATO allies Ankara and Washington have worsened since Turkey launched an operation, with the United States urging restraint and fearing an impact on the fight against the Islamic State (IS) extremist group.

One of the issues marring relations was the U.S. supplying the YPG with arms since last year in battles against IS.

Manbij itself was retaken from IS by the Kurdish-led, U.S.-backed Syrian Democratic Forces in 2016 as part of a push that would later recapture the city of Raqqa from the jihadists.

The Turkish presidency said US National Security Advisor H.R. McMaster "confirmed" to Erdogan's spokesman Ibrahim Kalin in a phone call late Friday that Washington would no longer "give weapons to the YPG".

Reporter’s code: 50101