Rabat, June 22 -- Abdullah, a son of the late former Egyptian president Mohamed Morsi, is pointing fingers at President el-Sisi and a number of senior Egyptian officials in the death of his father.

Abdullah said on Twitter on Monday that his father did not die of a natural death. Instead, he said, Morsi was "murdered" by Egyptian authorities.

Morsi collapsed in a Cairo courtroom on Monday, where he was facing espionage charges.

Since 2013, when his then defense minister and current president, Abdel Fattah el-Sisi, stepped in to overthrow Egypt's first and only democratically elected government, Morsi had been detained in conditions that critics and man international organizations decried as "arbitrary" and "politically motivated."

Ele...