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.
"We've apprehended one suspect and are intensively seeking more information as well as other people," Skotnes said.
"Our hypothesis is that it is criminals who have an agenda against other criminals, but we cannot rule out anything."
The area was now safe, he added.
A 13-year-old was apprehended by police, TV2 and daily Aftenposten reported, citing unnamed sources.
Skotnes declined to comment on the suspect's age.
The incident comes a day after reports of drone sightings near Oslo's and Copenhagen's airports.
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Tensions in the region remained high on Tuesday (10 March), as the United States and Iran exchanged increasingly sharp warnings, including threats over the strategic Strait of Hormuz, a critical artery for global oil supplies.
Iran and the U.S. exchanged threats on Tuesday, as U.S. Defense Secretary Pete Hegseth warned Tehran to expect the “most intense day" of attacks so far. Meanwhile, Iranian President Masoud Pezeshkian said “anyone who entertains the illusion of destroying Iran knows nothing of history."
The Strait of Hormuz has become a focal point of global concern as tensions rise following the conflict involving Iran, the United States and Israel. Tehran has threatened to block the strategic waterway, raising fears of disruption to global oil shipments and energy markets.
Reports of so-called “acid clouds” moving from Iran towards Central Asia are not supported by scientific data, national hydrometeorological services in Kazakhstan, Uzbekistan and Kyrgyzstan say, adding there is no threat to the region.
Tensions in the region remained high on Tuesday (10 March), as the United States and Iran exchanged increasingly sharp warnings, including threats over the strategic Strait of Hormuz, a critical artery for global oil supplies.
China has urged Afghanistan and Pakistan to resolve their dispute through dialogue after Chinese envoy Yue Xiaoyong met Afghan Foreign Minister Amir Khan Muttaqi, as fighting between the two neighbours entered its eleventh day.
Entry and exit across the state border between Azerbaijan and Iran for all types of cargo vehicles, including those in transit, will resume on 9 March, according to a statement by the Cabinet of Ministers of Azerbaijan.
Iran named Mojtaba Khamenei to succeed his father Ali Khamenei as supreme leader on Monday (9 March), signaling that hardliners remain firmly in charge, as the week-old U.S.-Israeli war with Iran pushed oil above $100 a barrel.
Iranian civilian and military officials have pledged their obedience to the new leader, Ayatollah Seyed Mojtaba Khamenei, with President Masoud Pezeshkian saying his leadership “will herald a new era of dignity and authority for the Iranian nation.”.
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U.S. Ambassador to the United Nations, Mike Waltz, has addressed the U.N. Security Council, saying the world must consider how effective its engagement with the Taliban-run country is as millions face hunger.
British MPs have rejected a proposal to introduce an Australia-style ban on social media for under-16s, opting instead to give ministers flexible powers to impose restrictions on platforms.
Australia has granted humanitarian visas to five Iranian women footballers who sought asylum, fearing persecution after refusing to sing their national anthem at an Asia Cup match.
Start your day informed with AnewZ Morning Brief. Here are the top news stories for the 10th of March, covering the latest developments you need to know.
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