The Nigerian authorities are questioning a man about a fire that burned out the Lagos offices of the Nigeria National Petroleum Corporation on Tuesday.
The man, Chris Nwokobia, gave himself up to the police in the city on Wednesday.
A number of media organisations had received phone calls saying that a group Mr Nwokobia is associated with, the Youth Democratic Movement, had started the fire.
Mr Nwokobia's lawyer is reported to have asked that his client be taken before the courts.
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