Police in Sweden are hunting a suspect in connection with an explosion and fire at a block of apartments that injured 16 people, four of them seriously.
The man is said to be 55 years old and had been living with his mother in the building in Gothenburg, according to local reports.
Officers have not disclosed the name of the man, who is wanted on suspicion of public destruction.
One neighbour told Sverigesradio there had been concerns about chemical smells coming from the basement.
“We still do not know what caused the explosion,” senior police officer Anders Borjesson said on Thursday.
“The investigation is far from over. We still have a lot ahead of us.”
Reports in the Swedish media initially suggested the incident could have been linked to feuding gangs in the area but police have since said they do not believe gang activity played a part.
Mr Borjesson declined to give details on the suspect, saying only that the warmth and lack of oxygen in the building had made it difficult for investigators to do their work.
Hans-Jorgen Ostler, spokesman for the regional police, urged the public not to approach a man if they believe he is the suspect.
“It is clear that if you see the person, you should not try to arrest him yourself but call the police,” he said in comments carried by Swedish newspaper Aftonbladet.
The appeal comes after a blast at a building in Gothenburg shortly before 5am on Tuesday morning, sparking a fire that spread to several apartments. One victim is in intensive care.
Panicked residents were sent fleeing to their balconies, with some using sheets tied together to lower themselves to the ground.
At least one person fell from a balcony, according to witness Lars Hulten, who lives in the building.
"The whole apartment vibrated, the bed vibrated," Mr Hulten told the Göteborg Tidning newspaper. He also described how his neighbours "hung from balconies” and said “there was one who fell" after the explosion.
Jon Pile, operations manager at the greater Gothenburg rescue service, said the flames spread to several apartments.
“It was burning in several places in the property and in several apartments after the explosion,” he said.
He told a news conference that the explosion appeared to have occurred in the building’s inner courtyard, which had its entry gate blown off.
Sweden’s home affairs minister Mikael Damberg told Swedish news agency TT that it was awful to see the devastation caused by the blast.
“Many of us now want answers to what happened and the cause of this terrible event,” he said.
Police have yet to determine the exact cause of the blast but believe it was “not of natural causes”.
Police spokesman Thomas Fuxborg said something had probably been placed at the site of the explosion.
Who's who in Yemen conflict
Houthis: Iran-backed rebels who occupy Sanaa and run unrecognised government
Yemeni government: Exiled government in Aden led by eight-member Presidential Leadership Council
Southern Transitional Council: Faction in Yemeni government that seeks autonomy for the south
Habrish 'rebels': Tribal-backed forces feuding with STC over control of oil in government territory
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Director: Elie Semaan
Starring: Abdullah Boushehri, Laila Abdallah, Lulwa Almulla
Rating: 3/5
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Directed by: Gail Mancuso
Starring: Dennis Quaid, Josh Gad, Marg Helgenberger, Betty Gilpin, Kathryn Prescott
3 out of 5 stars
The biog
Name: Gul Raziq
From: Charsadda, Pakistan
Family: Wife and six children
Favourite holes at Al Ghazal: 15 and 8
Golf Handicap: 6
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Key figures in the life of the fort
Sheikh Dhiyab bin Isa (ruled 1761-1793) Built Qasr Al Hosn as a watchtower to guard over the only freshwater well on Abu Dhabi island.
Sheikh Shakhbut bin Dhiyab (ruled 1793-1816) Expanded the tower into a small fort and transferred his ruling place of residence from Liwa Oasis to the fort on the island.
Sheikh Tahnoon bin Shakhbut (ruled 1818-1833) Expanded Qasr Al Hosn further as Abu Dhabi grew from a small village of palm huts to a town of more than 5,000 inhabitants.
Sheikh Khalifa bin Shakhbut (ruled 1833-1845) Repaired and fortified the fort.
Sheikh Saeed bin Tahnoon (ruled 1845-1855) Turned Qasr Al Hosn into a strong two-storied structure.
Sheikh Zayed bin Khalifa (ruled 1855-1909) Expanded Qasr Al Hosn further to reflect the emirate's increasing prominence.
Sheikh Shakhbut bin Sultan (ruled 1928-1966) Renovated and enlarged Qasr Al Hosn, adding a decorative arch and two new villas.
Sheikh Zayed bin Sultan (ruled 1966-2004) Moved the royal residence to Al Manhal palace and kept his diwan at Qasr Al Hosn.
Sources: Jayanti Maitra, www.adach.ae
The chef's advice
Troy Payne, head chef at Abu Dhabi’s newest healthy eatery Sanderson’s in Al Seef Resort & Spa, says singles need to change their mindset about how they approach the supermarket.
“They feel like they can’t buy one cucumber,” he says. “But I can walk into a shop – I feed two people at home – and I’ll walk into a shop and I buy one cucumber, I’ll buy one onion.”
Mr Payne asks for the sticker to be placed directly on each item, rather than face the temptation of filling one of the two-kilogram capacity plastic bags on offer.
The chef also advises singletons not get too hung up on “organic”, particularly high-priced varieties that have been flown in from far-flung locales. Local produce is often grown sustainably, and far cheaper, he says.
The National's picks
4.35pm: Tilal Al Khalediah
5.10pm: Continous
5.45pm: Raging Torrent
6.20pm: West Acre
7pm: Flood Zone
7.40pm: Straight No Chaser
8.15pm: Romantic Warrior
8.50pm: Calandogan
9.30pm: Forever Young
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6pm: Mazrat Al Ruwayah – Group 2 (PA) $40,000 (Dirt) 1,600m
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6.35pm: Race of Future – Handicap (TB) $80,000 (Turf) 2,410m
Winner: Global Storm, William Buick, Charlie Appleby
7.10pm: UAE 2000 Guineas – Group 3 (TB) $150,000 (D) 1,600m
Winner: Azure Coast, Antonio Fresu, Pavel Vashchenko
7.45pm: Business Bay Challenge – Listed (TB) $100,000 (T) 1,400m
Winner: Storm Damage, Patrick Cosgrave, Saeed bin Suroor
20.20pm: Curlin Stakes – Listed (TB) $100,000 (D) 2,000m
Winner: Appreciated, Fernando Jara, Doug O’Neill
8.55pm: Singspiel Stakes – Group 2 (TB) $180,000 (T) 1,800m
Winner: Lord Glitters, Daniel Tudhope, David O'Meara
9.30pm: Al Shindagha Sprint – Group 3 (TB) $150,000 (D) 1,200m
Winner: Meraas, Antonio Fresu, Musabah Al Muhairi
Greatest of All Time
Starring: Vijay, Sneha, Prashanth, Prabhu Deva, Mohan
T20 World Cup Qualifier
Final: Netherlands beat PNG by seven wickets
Qualified teams
1. Netherlands
2. PNG
3. Ireland
4. Namibia
5. Scotland
6. Oman
T20 World Cup 2020, Australia
Group A: Sri Lanka, PNG, Ireland, Oman
Group B: Bangladesh, Netherlands, Namibia, Scotland