Norway police investigate explosion in central Oslo

Norwegian police said on Tuesday they were investigating a blast on a street in central Oslo and later conducted a controlled detonation of a second explosive device found on the site, adding that a suspect had been apprehended for questioning.

There were no reports of injuries at the location, in the immediate vicinity of a university campus and some 500 metres (546 yards) from the royal palace and the Israeli embassy.

In a rare step, authorities sent an emergency message to Oslo residents’ mobile phones, warning them about the blast.

The second device found at the site appeared to be a “military-style” hand grenade, the police officer in charge at the scene, Brian Skotnes, told reporters.

Read more: Reuters