Six police officers were injured during disturbances in the Easton area of Bristol to mark the death of Baroness Thatcher.
Avon & Somerset Police Chief Inspector Mark Jackson said: "We were called to Chelsea Road, Easton at around 12.30am today.
"Around 200 people had gathered to have a street party and refused police requests to peacefully disperse. Bottles and cans were thrown at officers, six of whom suffered injuries. One remains in hospital. A police vehicle was damaged and one person was arrested for violent disorder.
"Some small bin fires were also started and the fire service also attended."
More top news
Sam Galsworthy, uncle of missing Becky Watts, has spoken about the family's anguish as the search for her continues and they wait for news.
Ahead of this summer's Shaun the Sheep trail in Bristol, the first celebrity statue and its artist are unveiled.
The leaders of a gang which brought drugs from London and laundered the proceeds in Taunton and Bridgwater have been sentenced.