AMMAN, Jordan — Jordan’s Prince Hamzah on Sunday made his first public appearance since he was placed under house arrest last week, reciting Quranic verses together with King Abdullah II at the graves of their forefathers. The gesture appeared to be an attempted show of unity on a major Jordanian holiday.

Abdullah has attempted to signal in recent days that the situation is under control. But Sunday’s staged event left it unclear whether the king and his popular half brother have truly put aside their differences. The conflict had escalated into the most serious public rift in the ruling family in decades, although Hamzah has denied any wrongdoing.

Hamzah joined members of the Jordanian royal family marking the centenary of the establishment of the Emirate of Transjordan, a British protectorate that preceded the kingdom. The royal palace released a photo and video with Abdullah and Hamzah joining other dignitaries at the grave of their father, the late King Hussein, and the late King Talal, their grandfather.

A photo and video showing the family together reciting the opening chapter of the Quran appeared to be aimed at sending a message of unity at a sensitive time for the kingdom. The chapter, known as the Fatiha, is traditionally recited at people’s gravesides.