Muslim Brotherhood groups react to Morsi's death
Speaking to the Associated Press on Monday, Murad Adaileh, Secretary General of the Islamic Action Front, the political arm of the Muslim Brotherhood in Jordan, says that Morsi was deprived of healthcare in prison for the last seven years.
"Today, Doctor Mohammed Morsi is a hero martyr, the military regime is responsible for his blood (death), those who imprisoned him unfairly and deprived him of medication and deprived him of contact with his family," he said.
"What happened to Morsi is completely a crime, and we call for an international investigation into what happened."
Adaileh called for an international investigation into Morsi's death.
Hamas also paid tribute to former Egyptian president Mohammed Morsi, who had been a close ally of the Palestinian movement which rules the Gaza Strip.
Hamas, an offshoot of Morsi's Muslim Brotherhood movement which is outlawed in Egypt, issued a statement hailing his influence.
It praised Morsi's "long struggle spent in the service of Egypt and its people, and primarily the Palestinian cause".
Mohammed Sudan, leading member of the Muslim Brotherhood in London, said Morsi was banned from receiving medicine or visits and there was little information about his health condition.
"This is premeditated murder. This is slow death," he said.
Freedom and Justice, the Brotherhood’s political arm, said in a statement on its Facebook page that prison conditions led to Morsi’s death in what amounted to "assassination."
A report by three British MPs warned inadequate prison conditions could lead to the premature death of Morsi, who had a history of health issues including diabetes and liver and kidney disease.
Since Morsi's overthrow on July 3, 2013, his former defence minister, current President Abdel Fattah al-Sisi, has waged an ongoing crackdown targeting his supporters from the Muslim Brotherhood with thousands jailed and hundreds facing death sentences.
Wires contributed to this story.