A United Nations team, led by Patrick Cammaert, tasked with monitoring a ceasefire in the Yemeni port city of Hodeidah arrived in Aden on Saturday.
The team made its first stop in Aden where the legitimate government is based.
While in the city, Cammaert, a retired Dutch general, is due to meet with leaders from the legitimacy, before heading to Hodeidah.
The team's arrival comes a day after the UN Security Council unanimously approved a resolution authorizing the deployment of observers to Hodeidah.
The UN team is due to secure the functioning of the port as well as supervise the withdrawal of fighters from the city.
The resolution submitted by Britain also endorses the outcome of UN-brokered peace negotiations in Sweden last week, where the warring parties agreed to the Hodeidah truce which came into force on Tuesday despite violations by Houthi militias.
The text approved by the Security Council "insists on the full respect by all parties of the ceasefire agreed" for Hodeidah.
It authorizes the United Nations to "establish and deploy, for an initial period of 30 days from the adoption of this resolution, an advance team to begin monitoring" the ceasefire, under Cammaert's leadership.
