A government spokesman has said Abuja residents should remain calm tonight, saying that security agencies are now "handling the situation."
The latest explosion in Nigeria's capital, Abuja, killed 21 and injured 17 people in a shopping complex.
Spokesman Mike Omeri told AP: "Every step is being taken by the government to check the activities of insurgents in the country."
More top news
Multiple explosions in a park in a Japanese city have left at least one person dead and three injured.
A man said to be armed with dangerous articles remains inside an address in west London.
Time Warner owns the Warner Bros movie studio, responsible for franchises such as Harry Potter and Batman.