By Dan Eggen Washington Post Staff Writer Monday, May 14, 2007; 5:32 PM Deputy Attorney General Paul J. McNulty announced his resignation today, saying he is leaving the Justice Department later this summer to enter the private sector, officials said. McNulty announced his plans to leave in a letter to Attorney General Alberto R. Gonzales, citing the financial pressures of having children entering their college years, one official said. McNulty is the latest senior Justice official to announce his departure amid the swirl of controversy over the firings last year of nine U.S. attorneys. Three other top aides to Gonzales have quit in recent months. The removals of the prosecutors have sparked a furor in Congress over shifting explanations from Gonzales and other Justice officials. McNulty acknowledged providing inaccurate information to Congress in February about the dismissals, but blamed the errors on inadequate preparation by others more deeply involved in the removals..