The Socio-Economic Rights and Accountability Project says operatives of the Department of State Services have taken over its office in Abuja.
In a statement on its X page on Monday, SERAP described the action as an “unlawful occupation”.
The group added that the operatives are demanding to see its directors.
“Officers from Nigeria’s State Security Service (SSS) are presently unlawfully occupying SERAP’s office in Abuja, asking to see our directors.
“President Tinubu must immediately direct the SSS to end the harassment, intimidation and attack on the rights of Nigerians,” the organization said.
The alleged invasion is coming barely 24 hours after SERAP urged Tinubu to direct the Nigerian National Petroleum Company to reverse the hike in pump price of petrol.