Washington: At least two people were shot in separate incidents in Ferguson, Missouri, on Wednesday as hundreds of demonstrators gathered in support of protests in Baltimore over the police custody death of a black man.

"Police are having a difficult time investigating because of the rocks being thrown at them," Jeff Small, a spokesman for the city of Ferguson, was quoted as saying by CNN. "At this point, police are not sure if the (shootings are) linked to the protest or not."