George Floyd updates: Clashes as protesters defy curfew in US cities

Welcome to our live coverage of the US unrest over the death in police custody of African-American George Floyd. We will be keeping you updated throughout the day with the latest developments.

Here are some of the main headlines coming out of the US overnight:

• Riot police clashed with protesters in New York, Chicago, Philadelphia and Los Angeles, firing tear gas and pepper bullets
• The National Guard – the US reserve military force for domestic emergencies – said that 5,000 of its personnel had been activated in 15 states and Washington, DC
• Curfews have been imposed in nearly 40 cities, but protesters have largely ignored them
• President Donald Trump was briefly taken by the secret service into an underground bunker at the White House on Friday, for his safety
• Police in Washington DC have fired tear gas at demonstrators who set fire to properties near the White House. They include a historic church, St John’s Episcopal Church, known as the church of the presidents, near the White House
• At least 4,400 people have been arrested over several days of protests, according to a tally compiled by the Associated Press news agency