Police in Italy have arrested two American students.
They the pupils are connected to the killing of a policeman in central Rome.
According to a statement from Italian military police Carabinieri, the students are also being held for attempted extortion.
The students allegedly stabbed 35-year-old Mario Cerciello Rega to death on Friday.
Another police officer was injured in the incident.
US Supreme Court strikes down Trump's global tariffs
The US Supreme Court struck down Donald Trump's sweeping tariffs that he pursued under a law meant for use in national emergencies, handing a stinging defeat to the Republican president in a landmark opinion on Friday with major implications for the global economy.
Police search royal mansion as investigation into king's brother goes on
British police were searching the former mansion of King Charles' younger brother Andrew Mountbatten-Windsor on Friday after a photograph of the royal emerging from a police station was splashed on newspapers around the world.
7 bodies found after Chinese tour bus plunges into frozen lake in Russia's Siberia
Seven bodies have been found in Lake Baikal in Russia's Siberia after a tour bus carrying eight Chinese tourists plunged into the water when the ice broke as it crossed the frozen lake on Friday, the Russian emergency ministry said.
ASOS co-founder Quentin Griffiths dies in Thailand after balcony fall
Quentin Griffiths, who co-founded British fast-fashion retailer ASOS, has died after a fall from a balcony in Thailand, police said on Friday.
Former Philippines president Duterte will not attend ICC pre-trial hearings
Former Philippine president Rodrigo Duterte will not be present at pre-trial hearings in his case of alleged crimes against humanity at the International Criminal Court next week, the court said on Friday.
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