Federal prosecutors are recommending Roger Stone receive a prison sentence of seven to nine years for witness tampering and lying to Congress.

The 26-page sentencing memorandum, filed in the U.S. District Court for the District of Columbia on Monday, asks that Stone, a former associate of President Trump, serve 87 to 108 months in prison. The 67-year-old Republican operative was found guilty on seven charges last November following a two-week trial based on his actions during and after the 2016 presidential election.