Egypt's first democratically elected president Mohamed Morsi was buried on Tuesday, as the United Nations backed calls for an independent investigation into the causes of his death after he collapsed in a Cairo courtroom.
The UN called for an investigation on Tuesday after Morsi collapsed and died during a court appearance this week.
"We, as Turkey, will follow this issue and do everything possible for Egypt to be tried in worldwide courts for Morsi's death", he said, calling on the Organisation of Islamic Cooperation to take action towards this end.
Morsi, a leading member of the Muslim Brotherhood group which is now banned in Egypt, died on Monday after collapsing in a Cairo court while on trial on espionage charges.
In a statement, Foreign Ministry spokesman Ahmed Hafez "condemned" the suggestion, insisting it was "a case of natural death".
The Turkish leader said Wednesday: "Unfortunately, Mohammed Morsi was on the ground of courtroom flailing for 20 minutes".
Egyptian rights groups hoped that Morsi's death will bring attention to the conditions inside prisons in Egypt.
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Rights groups have called for an investigation into Morsi's death and raised questions about his treatment in prison.
"He's been in prison and treated worse than the already awful conditions for Egypt's prisoners", Sarah Leah Whitson, executive director of HRW's Middle East and North Africa division, told Al Jazeera, decrying Morsi's "terrible but entirely predictable" death.
"We believe it is clear there must be a thorough independent inquiry into the circumstances of Morsi's death, including the conditions of his detention", he added.
That lies near the prison where Egypt's first civilian president, a prominent Muslim Brotherhood member, had been held for six years in solitary confinement and deteriorating health.
Morsi had been in custody since his removal in a 2013 military coup.
Egypt's government has dismissed accusations that the former president was badly treated.