A city-based activist has lodged a complaint against Iqbal Malik, the younger brother of former Maharashtra minister Nawab Malik, for allegedly threatening him, a police official said on Sunday.

Vinod Sonkamble, who is a Right to Information Act (RTI) activist, said in his complaint that Iqbal Malik threatened him at the Brihanmumbai Municipal Corporation's (BMC) ward office in Kurla last month after he raised an issue of illegal constructions in the area, he said.