Probes into NP blast continue Monday 25 January 2021 A fire at the National Petroleum (NP) marketing company's building, Sea Lots, on Friday afternoon led to the evacuation of the building last month. Photo source: Social media More than a month after an explosion at the National Petroleum's (NP) Sea Lots building, both the fire service and the company's internal health and safety team are still investigating the cause. Newsday sent an e-mail to NP corporate communications manager Denise Caesar asking how far the investigation had progressed. Caesar replied that both external and internal investigations were ongoing and she could not comment on them at this time.