The nephew of late Egyptian President Mohammed Morsi has been detained and held at an unknown location without access to the outside world, according to a report by the former leader's oldest son, Ahmed.

Ahmed Morsi said in a tweet on Sunday that his cousin Khaled Said Morsi, was "forcibly disappeared" by Egyptian authorities on 6 September.

"The current regime hasn't had its fill of [persecuting] the Morsi family… may God protect you Khalid," he said.

Ahmed added that Khalid's older brother, also called Mohammed Morsi, had been in detention for nine years.

Former President Mohammed Morsi, a member of the Muslim Brotherhood, won Egypt's first and only democratic presidential election in 2012.

However, he was overthrown one year later in a military coup led by Egypt's current president, Abdel Fattah al-Sisi, and died in an Egyptian courtroom in 2019 after suffering years of medical neglect in prison.

Since the 2013 coup, Morsi's relatives have suffered continued persecution and harassment at the hands of Egyptian authorities.

His family was not allowed to bury him at his home village in Sharqiya province in 2019 and his wife was prevented from attending his funeral, which took place in Cairo.

Morsi's son, Osama, was detained by authorities in 2016 after drawing attention to his father's mistreatment in prison in an open letter to the UN.

Another son, Abdullah, died of a heart attack at the age of 24 in 2019 according to initial reports but his lawyers later said that he had been injected with a lethal substance.

The New Arab