Prosecutors in Detroit have joined the U.S. federal probe into Takata Corp’s (7312.T) defective air bag inflators that are linked to at least six deaths globally. The U.S. Attorney’s Office for the Eastern District of Michigan and the U.S. Department of Justice’s Criminal Division, Fraud Section in Washington “are jointly handling the criminal investigation into Takata,” Gina Balaya, spokeswoman for the Detroit office, said on Thursday. “We have been cooperating fully and are engaged in a regular dialog with the Department of Justice, and we will continue to do so,” a Takata spokesman said.