Democratic presidential candidate Joe Biden has urged charges against police who shot two black Americans, Jacob Blake and Breonna Taylor.

Speaking in Delaware, Mr Biden did not specify what counts should be brought in the cases, which have fuelled racial justice protests nationwide.

The Democrat spoke after notching up a record fundraising haul in August.

He has a lead over President Donald Trump, a Republican, in opinion polls ahead of November's election.

During a news conference in his hometown of Wilmington on Wednesday, Mr Biden was asked whether he agreed with his running mate, Kamala Harris, that the officers in the Blake and Taylor cases should be charged.

"I think we should let the judicial system work its way," he said. "I do think at a minimum, they need to be charged, the officers."

Mr Blake, 29, was shot seven times in the back and paralysed during an arrest in Kenosha, Wisconsin, on 23 August.