ADDIS ABABA, June 23 (Xinhua) -- At least 83 people were injured in an explosion that rocked a mass rally on Saturday in Ethiopia's capital city of Addis Ababa, and none was killed, according to a senior government official.

Ahmed, addressing Ethiopians on TV after the rally, at first said that a few people were killed and several injured in the blast. He, however, did not mentioned the exact number of casualties from the bomb incident.He said that investigations are underway to find perpetrators and their motives behind the bomb attack.

According to eyewitnesses, the explosion has occurred near a police vehicle as millions of participants were about to wrap up their demonstration.

The mass rally, which was held in Addis Ababa and other major cities across the East African country, was organized to give credit to the various activities taken over the past two months by Ahmed's administration.

The rally that was initiated by Ethiopians mainly through various social media outlets attracted the attention of the Ethiopian government and is expected to feature the prime minister.

Ahmed, who took the prime minister position in April this year, has made various decisions that mainly aimed to bring about peace and unity among ethnic groups in the country.