Mother: Son was holding sandwich when shot dead

The mother of a black 18-year-old shot dead by a white police officer says her son was only holding a sandwich in his hand when he was killed.

Police last night said they have evidence the teen was holding a gun when the officer shot 17 rounds at the suspect.

The shooting by the off-duty St Louis police officer led to an angry demonstration, with some protesters likening it to the August killing of an unarmed black 18-year-old by a white officer in nearby Ferguson.