Trayvon Martin death: Lawyer seeks Zimmerman arrest
The US Department of Justice will carry out an investigation into the shooting of an unarmed black teenager in Florida in February.
Trayvon Martin, 17, was killed by neighbourhood watch volunteer George Zimmerman, 28, while walking through a gated community in a suburb of Orlando.
Mr Zimmerman says he was acting in self-defence.
Benjamin Crump, a lawyer for the Martin family, used a news conference on Tuesday to call for his arrest.