More than 20,000 people have been urged to evacuate their homes ahead of an “imminent” eruption of Indonesia’s Mount Merapi. A lava dome forming at the peak of one of the nation’s most dangerous and active volcanoes has triggered fresh concerns. Authorities are going door to door on Saturday to encourage residents to leave the densely populated slopes.

Up to 200 people died today in an oil pipeline explosion on the outskirts of Lagos, Nigeria, the state commissioner of police said. “You can see the corpses. Some are burned to ash,” the police commissioner told Reuters. “It seems these people were literally incinerated, almost instantly,” CNN’s Jeff Koinange reports.