Russian President Vladimir Putin has expressed concern over violence involving Russian and Polish football fans in Warsaw.
Mr Putin has told the Polish Prime Minister Donald Tusk in a telephone conversation that Euro 2012 organisers were responsible for fan safety.
"Mr Putin stressed that organisers of such international tournaments bear full responsibility for the safety of fans from other countries on their territory," the presidential spokesman told reporters.
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Primary school teacher Lewis Siddall was killed in an 'unprovoked and senseless' act of violence, family and police say.
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The vehicle is captured on CCTV crashing through the shop window and hitting a browsing customer who was lucky not to be seriously hurt.