OKLAHOMA CITY (AP) — Federal prosecutors say 38 people in Oklahoma have been targeted as part an investigation into people lying to get federal housing benefits.

U.S. Attorney Sanford Coates announced Thursday that 22 people have been charged criminally in federal and state court and that 16 others are named in federal civil cases. Coates says the now 16-month investigation is ongoing and that he expects additional charges.

The arrest warrants were served Wednesday by law enforcement officers from several state and federal agencies across Oklahoma.

Coates says the targets of the probe are accused of lying to federal authorities about their income or criminal history in order to receive rent subsidies or other federal housing assistance.

The Oklahoma Housing Finance Authority administers more than $50 million in subsidies each year.