The FBI is joining a criminal investigation into lead contaminated drinking water in Flint, Michigan, exploring whether any laws were broken in a crisis that has captured international attention.

Federal prosecutors in Michigan were working with an investigative team that included the FBI, the U.S. Postal Inspection Service, the U.S. Environmental Protection Agency's Office of Inspector General, and the EPA's Criminal Investigation Division, a spokeswoman for the U.S. Attorney's Office in Detroit said.

A Federal Bureau of Investigation spokeswoman said the agency was determining if any federal laws were broken, but declined further comment. Also on Tuesday, EPA Administrator Gina McCarthy is meeting with officials and community leaders in Flint.