BOSTON (AP) -- The former director of the Chelsea Housing Authority was paid as much as $120,000 more than he claimed, according to prosecutors who charged him Wednesday with falsely reporting his salary to the federal government.

Investigators from U.S. Attorney Carmen Ortiz's office allege Michael McLaughlin knowingly falsified his salary in annual housing authority budgets from 2008 to 2011 and submitted them to the state Department of Housing and Community Development. The reports are also required by the federal Department of Housing and Urban Development.

Investigators allege that in the 2011 fiscal year, McLaughlin, 67, reported that his annual salary was $160,415, when he knew his actual salary was at least $283,471 and his total compensation was at least $324,896.

Prosecutors allege McLaughlin also falsely reported his income in 2008, 2009 and 2010.

McLaughlin, who lives in Dracut, faces a maximum punishment of 20 years in prison, followed by three years of supervised release and a fine of $250,000 on each of four counts.