The police warned the explosion at 02.25 hours in the night to Wednesday.
"What a crack or explosion we do not know," says Peter Nordengard.
In addition to the big damage to the restaurant, the property next to it has a box down. The site is locked and a national bombing is called on the site.
At this moment there is no injuries. The police launched a preamble on a joint destructive destruction.
Fire a week ago in Orust
A week ago burn the restaurant in the camp on the Orust to the ground. Police investigate the incident as a fire, but does not want to say if anyone thinks there is a connection between the events.
"I can not speculate about it. It's not clear if there is any connection," says Peter Nordengard.
Text is updated.