Rights group Human Rights Watch (HRW) has called on the Nigerian authorities to take measures to ensure the protection of civilians against abuses by security forces.
The report, which was leaked on Monday, concluded that the military and the police opened fire on peaceful protesters, killing at least 11 and wounding around 30 while four went missing.
It described the incident as a “massacre”.
Nigeria’s army has denied shooting live rounds at protesters.
HRW says the authorities should now focus on what it calls “correcting their wrongs” instead of “denying the truth”.
The report into what happened at the Lekki tollgate is yet to be officially made public.
The Lagos state government has said it will release a white paper on the findings in the coming weeks.
