The Socio-Economic Rights and Accountability Project (SERAP) has urged President Muhammadu Buhari to probe the attack on the presidential candidate of the Labour Party, Mr Peter Obi.
On Monday, Obi was attacked by hoodlums in Katsina on his way to the airport. The incident has since been condemned by Nigerians and the Obi-Datti Presidential Campaign Council.
According to the campaign team, the said attack took place after Obi had met with women in a townhall and then held a rally at the Muhammad Dikko Stadium.
SERAP in a statement on Sunday by its Deputy Director, Kolawole Oluwadare, asked President Buhari to direct the Inspector-General of Police Usman Baba, to properly investigate the incident.
The rights group wants the IGP to also probe other cases of election-related intimidation, harassment and violence across the country.