The US Department of Justice has announced an investigation into the shooting of an unarmed black teenager in Florida.
Trayvon Martin, 17, was shot dead by George Zimmerman, 28, while Martin was walking through a gated community in a suburb of Orlando last month.
Zimmerman says he acted in self-defence.
The case has caused controversy in the US.
Earlier yesterday rallies were held to demand Zimmerman's arrest.
More than 480,000 people have signed a global online petition asking for Zimmerman, a neighbourhood watch volunteer, to be prosecuted.