President-elect Barack Obama said Monday a report prepared by his transition operation shows that there were no “inappropriate” dealings between his staff and Gov. Rod Blagojevich (D) on the question of who should replace him in the Senate.

Obama, who appeared at a news conference in Chicago where he announced his top aides on the environment, called the report “thorough and comprehensive.” He reiterated earlier assertions that he has had no contact with Blagojevich or the governor’s staff on the Senate seat appointment.

Obama said the release of the report will be delayed a week on the request of prosecutors who are preparing corruption charges against Blagojevich.

“We just want to make sure that we’re not interfering with an ongoing and active investigation,” Obama said.