The mourners taking part in the ceremony bade farewell to the dead in the ancient city of Zaria in Kaduna State.
The deaths occurred after Nigerians took to the streets to denounce Tel Aviv’s deadly military assault on Gaza last Friday.
The Quds Day rally in Zaria turned violent when soldiers opened fire on protesters, killing 25 demonstrators and arresting 12 others.
Among those killed was 18-year-old Syed Mahmud Ibrahim Zakzaky, a son of Sheikh Ibrahim al-Zakzaky, the leader of the Islamic Movement in Nigeria, which had called for the rally. He is a critic of political corruption and Boko Haram.
Another son of the Muslim leader was reportedly injured and two others were arrested. Later, military forces reportedly killed all detainees, including the two sons of Sheikh Ibrahim al-Zakzaky, before handing over their bodies to Ahmadu Bello University (ABU) teaching hospital.
Government forces also attacked a mosque in Nigeria on Saturday, killing three people.
Imam Khomeini, the late founder of the Islamic Republic, designated the last Friday of the lunar month of Ramadan as the International Quds Day, during which Muslims across the world hold rallies to show their solidarity with Palestinians.
This year’s anti-Israel rallies are being held as Israeli warplanes and tanks have been pounding numerous sites inside the Gaza Strip.
About 1,300 people have been killed in the Israeli aggression against the Gaza Strip since July 8, and 7,200 have been injured.
Over 80 percent of the Palestinian fatalities have been civilians, including nearly 300 children.
