Hundreds of Muslim Brotherhood supporters took to the streets of Abuja of Nigeria’s Capital to pray for the soul of Mursi and Iwo city on Tuesday, afternoon former Egyptian president Mohamed Mursi and some chanting slogans blaming Cairo authorities for his death.

Solatul Ghayb observed For Muhammad_Morsi at Taawun mosque Oke Afo, Iwo, state of Osun

Mursi – a leading member of the Islamist group which is now banned in Egypt – died on Monday after collapsing in a Cairo court while on trial on espionage charges, authorities and a medical source said.

The 67-year-old had been in jail since the army commanded by Egypt’s now president Abdel Fattah al-Sisi toppled him in 2013 after barely a year in power following mass protests against his rule.

About 500 people in Iwo prayed in a central street halting traffic outside the Taawun cental Mosque

Taawun Leader while morn the death of Mohammed Mursi

Another several hundred people also attended a symbolic funeral in Sokoto’s Ruji Sambo, and chanting “God is Greatest.”

Rights groups have called for an investigation into Mursi’s death and raised questions about his treatment in prison. Egypt’s government has dismissed accusations that he was badly treated.

Turkey’s President Tayyip Erdogan, a supporter of Mursi, called him a martyr on Monday. Muslim leaders said they would hold symbolic funerals for Mursi across Turkey’s 81 provinces.

Erdogan’s Islamist-rooted AK Party had supported Mursi’s short-lived Egyptian government, and many Brotherhood members and supporters have fled Turkey since its activities were banned in Egypt.

The Brotherhood says it is a non-violent movement and denies any relationship to violent insurgencies waged by al Qaeda and Islamic State militants.