A human rights group has claimed that Nigeria's security forces have killed more than 150 peaceful protestors since August 2015, the BBC reported Thursday.

Amnesty International said the country's military used live ammunition and deadly force against pro-Biafra protestors who were campaigning for independence from Nigeria.

Nigeria's police denies allegations that it used unnecessary force.

The country's army said Amnesty was trying to tarnish its reputation.

Amnesty's report is based on interviews with almost 200 people, alongside more than 100 photographs and 87 videos.

Among the allegations contained in the report are what Amnesty called "extrajudicial executions", when 60 people were shot and killed in Onitsha, in the two days surrounding Biafra Remembrance Day in May 2016.

Source: MENA