A newspaper says contractors involved in Detroit's home demolition program have been subpoenaed for records by a federal grand jury.
The Detroit News says the grand jury wants records on demolition work since Mayor Mike Duggan took office in 2014. Detroit has spent millions of federal dollars to bring down more than 11,000 blighted homes.
Duggan's chief of staff, Alexis Wiley, says the mayor's office has "fully cooperated" with investigations. She says Duggan believes people "should be punished" if there's wrongdoing. He's up for re-election this year.
The U.S. Attorney's Office declined to comment Tuesday.
The demolition program has been under scrutiny by state and federal agencies. In January, Duggan said the city had agreed to repay $1.3 million but take other disputes to an arbitrator.
