(CNN) - U.S. Attorney General Eric Holder said Tuesday that the Justice Department has launched a criminal investigation into the massive oil spill spreading through the Gulf of Mexico.
Holder said the investigation would be both comprehensive and aggressive. He promised that the federal officials will prosecute anyone who broke the law.
Holder, who made the announcement during a visit to the Gulf, called early signs of the spill heartbreaking and tragic
The attorney general was in the Gulf to survey the BP oil spill and meet with state attorneys general and federal prosecutors from Louisiana, Alabama and Mississippi, according to the Justice Department.