The thugs stormed the venue in Alesa, Eleme, Rivers, dispersed supporters, and destroyed canopies, loudspeakers, chairs, and other equipment.
He accused some developers of constructing on unapproved sites and encroaching natural waterways.
Former Governor Peter Obi has commended NNPCL for revitalising the Port Harcourt refinery.
Mr Tinubu acknowledged the pivotal role played by the previous administration.
NNPCL boss Mele Kyari is leading the team in inspecting the first lifting of petroleum products from the facility after its rehabilitation.
