07/08/2013 at 12:00 PM EDT
Grammy award winning singer Lauryn Hill reported to prison on Monday, entering the Federal Correctional Institution in Danbury, Conn., for a three-month sentence.
, which includes an additional three months of house arrest after she checks out of prison, was sent down in May after she was found guilty of failing to pay nearly $1 million in taxes.
She recently posted an open letter on her Tumblr page
, where she ranted about slavery and the IRS. "I shuddered during sentencing when I kept hearing the term 'make the IRS whole' ... make the IRS whole, knowing that I got into these very circumstances having to deal with the very energies of inequity and resistance that created and perpetuated these savage inequalities," she wrote.
Hill, 38, began her singing career with The Fugees and went on to earn five Grammy awards for her 1998 debut solo album The Miseducation of Lauryn Hill
. She will reportedly be housed in the general population
of the minimum security prison.