Video footage shows the charred ruins of hundreds of homes in Coffey Park, Santa Rosa, after one of the deadliest fire days in California's history. Several people have died in fires across the state, 20,000 people have been evacuated from their homes and more than 2,000 structures have been destroyed, officials have said. Investigators are trying to determine the cause of the fires

• California fires: chaos as blaze rages out of control with more than 100 missing