A week-long nightly curfew from 10pm to 5am has been announced in the US city of Baltimore after rioting erupted in protest at the death of a black man in police custody.

Thousands of troops and soldiers from outside the city have been deployed.

Much of the violence happened in a poor area, parts of which had not been rebuilt since riots back in the 1960s.

Volunteers turned out on Tuesday to help clear up the debris.

Schools were closed, as was a shopping centre amid fears that rioters might target it.

Buildings and scores of cars were burned in the violence.

The trouble followed Freddie Gray’s funeral. After spending a week in a coma the 25-year-old died from a spinal injury suffered as police transported him in a van. Six officers have been suspended.

His family have appealed for calm.

“I’m as hurt but I do not want you all to be out here. I want you all to get justice for my son but don’t do it like this here. Don’t tear up the whole city, man. Just for him? It’s