The United States said it could not confirm reports that Ukraine had disabled vehicles in a Russian convoy inside Ukraine and warned Moscow that any intervention into Ukraine without Kiev's permission was unacceptable.
"Even as we work to gather information, we reiterate our concern about repeated Russian and Russian-supported incursions into Ukraine," White House spokeswoman Caitlin Hayden said in a statement.
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The victims were playing the popular game in Whittington Park in Holloway on Tuesday night, when three males suspects approached them.
A former Royal Marine who was recently engaged has been killed in a climbing accident in the French Alps.
Through the day we'll see plenty of sunny spells but there will be a risk of showers too as they filter down from the northwest.