Police have said two FBI agents have been shot in Ferguson, where there has been a second night of violence over the deaths of unarmed black teenager Michael Brown.
Both agents suffered non-life threatening gunshot injuries outside a house a few miles from the St Louis suburb of Ferguson. It is not clear whether the attack is connected to the unrest.
The protests follow a decision not to prosecute officer Darren Wilson, who fatally shot Michael Brown.
At least 44 people were arrested as the protests erupted in Ferguson, Missouri, for a second night over the Michael Brown case, police said.