A man was arrested after the severed parts of nine bodies, some of them in picnic coolers, were found in his flat, Japanese media reported.
Witnesses say there were two explosions, one at around 10am local time and then another about three hours later, both of which could be heard miles away.
Peter Madsen has been accused of murdering journalist Kim Wall and disposing of her body when she accompanied him on his submarine earlier this month.
The headless torso of a woman found floating at sea is that of a Swedish journalist who authorities believe died aboard a Danish inventor's home-made submarine.
At least 32 people beat to death five women accused of sorcery before burning their corpses in Tabora on July 25, officials say. Hundreds of people accused of witchcraft are murdered in the east African country each year.
The four civilians killed in the incident included two children of a family whose house was hit by a separate avalanche in Indian-administered Kashmir on Wednesday.
An angry mob lynched the bus driver after he lost control of his vehicle and ploughed into a group of people marking the birthday of Prophet Mohammed.
At least six civilians killed and several others injured as suicide bomber attacks meeting in Jalalabad.
An argument which ended in a shooting at a party in Los Angeles killed 3 people and wounded a dozen others.
The 27-year-old Swiss man who set a train carriage on fire and attacked passengers with a knife has died along with a 34-year-old female victim.
The damage from flooding in France is already estimated to cost around $680 million according to France's association of insurers.
German police say there may have been a political motive behind the attack,which left one dead and three others wounded.
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