Kayana Szymczak/Globe Staff

Michael E. McLaughlin stood in front of a Chelsea Housing Authority building in October 2011.

By Andrea Estes, Sean P. Murphy and Martin Finucane Globe Staff

Former Chelsea Housing Authority chief Michael E. McLaughlin has agreed to plead guilty to four federal charges of deliberately concealing his huge salary from state and federal regulators from 2008 until he resigned in 2011, according to an agreement filed in federal court today.

“Defendant expressly and unequivocally admits that he committed the crimes charged in all counts of the information, did so knowingly and intentionally, and is in fact guilty of those offenses,” federal prosecutors said in the document that was signed by both US Attorney Carmen Ortiz, and McLaughlin and his attorney.

McLaughlin, who has been criticized by public officials as building up his power and salary at the expense of the low-income people he was supposed to serve, was charged last month in a criminal information filed in federal court, a document used by prosecutors to outline the charges against defendants — typically when a guilty plea is imminent.

The agreement said that at the “earliest practicable date” McLaughlin “shall waive indictment and plead guilty.”

Under the agreement, McLaughlin also promised to “cooperate fully with law enforcement agents and government attorneys” providing “complete and truthful information to all law enforcement personnel.”