The Edo State House of Assembly has been vandalised with its roof removed by unknown men.
The legislative mace on the top of the building was also removed on Thursday.
In a video which has gone viral on social media, trucks are seen offloading gravels at the entrance of the assembly complex while unidentified men trooped into the building.
Police had earlier in the day surrounded the assembly complex in Benin City.
The move, it was learnt, was to prevent an attack on the complex.