This 12 May 2015 video says about itself:
One day before a five-day humanitarian cease-fire is supposed to take effect in Yemen, a Moroccan war plane is shot down near the Saudi border.
Translated from Dutch NOS TV today:
Morocco withdraws from the military coalition that is fighting in Yemen under the leadership of Saudi Arabia. This is reported by anonymous government sources to news agency AP. They also say that the ambassador in Riyadh has been recalled. In recent times the relationship between the kingdoms has been strained, including about the course of the war in Yemen and the murder of Washington Post columnist Jamal Khashoggi.
Further details are not known. …
Last month, the Moroccan foreign minister already said that Rabat then had another role within the coalition.
He also suggested that the government frowned upon the recent visits of the Saudi Crown Prince Mohammed to other Arab countries. Mohammed bin Salman was under heavy pressure at the time of his travels, because of the strong suspicions about his involvement in the killing of Khashoggi.
A government official says to AP that Morocco has refused to receive the crown prince. The reason for this was the busy agenda of the Moroccan king.