Overview

• An explosion on Pilestredet in central Oslo on Tuesday night was caused by a hand grenade, with a second military-type device found and detonated under control as the area was secured.
• Police say three minors have been detained, including two 13-year-olds who are below the age of criminal responsibility and were placed in child welfare custody.
• Authorities’ leading theory is a settling of accounts between criminal groups, and investigators believe a nearby venue was the intended target rather than people.
• No injuries were reported; residents received an emergency mobile alert as police set a cordon and continued searches for additional suspects.
• Reports note the incident followed unverified drone sightings that briefly disrupted flights in Oslo and Copenhagen a day earlier, with no confirmed link to the blast.