An Italian court's decision on whether to uphold the convictions of Amanda Knox and Raffaele Sollecito for the murder of British student Meredith Kercher is due to be made today.
Italy's highest court had been expected to reach its decision on Wednesday but closing arguments took longer than expected.
Ms Kercher, a 21-year-old from Coulsdon, Surrey, was sexually assaulted and stabbed to death in her bedroom in 2007 while studying in Perugia, Italy.
Her flatmate Knox, a student from Seattle in the US, and Knox's then-boyfriend Sollecito spent four years in jail for the murder but were acquitted on appeal in 2011.
Knox returned to the US before an appeal court threw out the acquittal and reinstated her and Sollecito's guilty verdicts last year.
Italy's Supreme Court in Rome must decide if it finally upholds those convictions.
A spokeswoman for the court said: "The public hearing will continue at 9am, when one of the lawyers of the appeal will intervene. The panel of judges will go into chambers and then deliver their verdicts."
Assistant Attorney General Carlin from the US Justice Department said that two men "allegedly conspired to provide material support to ISIL and planned to travel overseas to support the terrorist organisation".
In a statement, Carlin said: “In addition, they plotted to attack members of our military within the United States. Disturbingly, one of the defendants currently wears the same uniform of those they allegedly planned to attack. I want to thank the many agents, analysts, and prosecutors who are responsible for disrupting the threat posed by these defendants.”
US Army National Guard soldier and his cousin have been arrested for conspiring to support Islamic State, the Justice Department said.
The two Chicago men spoke of using army uniforms, military knowledge and access to attack a military installation, the department said in a statement.
Italy's highest court has cleared American Amanda Knox and her Italian ex-boyfriend of the killing of Leeds University student Meredith Kercher .
Knox, 27, and her former partner Raffaele Sollecito, were convicted for the second time last year for murdering 21-year-old student Kercher, who was found stabbed to death in a house the women shared in Perugia, central Italy, in 2007.
But this evening the panel of judges at Rome's palace of Justices overturned the convictions and acquited the pair.
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Republican senator Ted Cruz has become the first candidate to announce he is running for the US presidency in 2016.
In a video posted to Twitter, the 44-year-old Texan said it was "going to take a new generation of courageous conservatives to make America great again", saying he wanted to lead the fight.
He previously said Hilary Clinton, a front runner for the Democratic nomination, "embodies the corruption of Washington".
Jeb Bush and New Jersey Governor Chris Christie are also rumoured to be planning on standing against Cruz for the Republican nomination.
Texas senator Ted Cruz plans to announce on Monday that he is running for US president according to the Associated Press.
The news reportedly comes from a strategist for the first-term Republican senator, who spoke to AP on condition of anonymity.
The news agency said the 44-year-old will be the first high-profile candidate to formally launch a White House bid, although several Republican contenders are expected to enter the race in the coming weeks.
Mr Cruz is known as a hardline Republican who has promised to repeal President Barack Obama's healthcare law, abolish the tax-collecting Internal Revenue Service and scrap the Education Department.