Authorities say the attacker in Belgrade was an underage male who was being monitored by security services.
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'Dissident republicans may be responsible' for explosive device at hotel - PSNI
The package was discovered at about 15:20 GMT on Tuesday at Ebrington Square in the Waterside.
What we know about the crash so far
More than 500 passengers were on board the trains when the incident occurred in the province of Toledo, south of Madrid.
Russell Brand tells court allegations had devastating impact on him
The entertainer begins giving evidence at his trial on charges including rape at Southwark Crown Court.
Arsenal to appeal against Dowman red card
Arsenal will appeal against Max Dowman's sending-off during Tuesday's Carabao Cup defeat at Fleetwood Town.
Carrick and Fernandes hold clear-the-air talks
Manchester United head coach Michael Carrick and captain Bruno Fernandes hold clear-the-air talks ahead of side's trip to Chelsea.
I get £4,062 a year and am trying my best - here's what I want from the Budget
People on a range of incomes from £4,062 to £150,000 a year tell the BBC what they want to see in this year's Budget.
Overturned carriages and makeshift medical tents at crash site
Dozens of people are feared dead after a high-speed train collided with another train south of Madrid.
Legal bid to overturn Drumcree march ban fails
The High Court in Belfast has rules that Sir Chris Bryant's decision made on 9 October was lawful.
Serrano to end career in Puerto Rico in January
Amanda Serrano will face Skye Falzon in Puerto Rico on 9 January in the final fight of her illustrious professional boxing career.
Four investigations Democrats could launch if they win Congress
Democrats have promised a wave of probes into the Trump administration if they win back the House.
You may get the right to find out what your colleagues earn - here's why
Employees should legally be able to find out what their co-workers are earning, the UK's equality watchdog says
Netanyahu and Eisenkot face difficult paths to power as neither set to win majority
The two main blocs appear to have too few seats to form the next government without reliance on Arab parties.
Luxury cruise passengers stranded in Cambodia due to soaring fuel costs
The Villa Vie Odyssey suspended its voyage and is working with passengers on "temporary living arrangements".
Judge to rule on Orangeman's challenge of Drumcree march ban
The latest legal challenge over the contentious march in Portadown will be decided in the High Court.
What could be in the Budget?
Chancellor John Healey will set out his plans for UK taxes on 28 October.
Confusion about Flávio Bolsonaro's whereabouts as Argentina says he flew to Ecuador
The defeated presidential candidate's whereabouts are unclear, as Argentina says he boarded a flight to Ecuador.
Confusion about Flávio Bolsonaro's whereabouts as Argentina says he flew to Ecuador
The defeated presidential candidate crossed a land border into Argentina late on Tuesday, Argentine migration authorities say.
Liverpool gambled on Jacquet and it is paying off
Liverpool beat Chelsea to the signing of Jeremy Jacquet and the defender is thriving at Anfield. Things could have been very different...
Liverpool gambled on Jacquet and it is paying off
Liverpool beat Chelsea to the signing of Jeremy Jacquet and the defender is thriving at Anfield. Things could have been very different...
Luxury cruise passengers stranded in Cambodia due to soaring fuel costs
The Villa Vie Odyssey suspended its voyage and is working with passengers on "temporary living arrangements".