New Jersey ? Newark Mayor Sharpe James betrayed his city by using his influence to help his one-time mistress rake in more than half a million dollars through shady real-estate deals, a prosecutor said in closing arguments Monday.

James is accused of arranging for the sale of nine city-owned properties at a discounted rate of $46,000 to Tamika Riley from 2001 to 2005. Riley quickly sold them for $665,000 without ever starting required rehabilitation work on most of them, prosecutors said.

The 41 witnesses heard during the five-week trial did not include James, 72, or Riley, 39, a publicist who once ran a clothing boutique near City Hall.

“We are here because Sharpe James betrayed the people of Newark,” Assistant U.S. Attorney Judith A. Germano told jurors at federal court in Newark, just a block from City Hall, where James led the state’s largest city for 20 years.