Pennsylvania's state government may not be open and accountable enough as it handles federal stimulus money, the state's fiscal watchdog warned in a letter to federal officials that The Associated Press obtained Monday.

Auditor General Jack Wagner's letter to a U.S. Government Accountability Office administrator warned that internal controls are so weak that information about how stimulus funds are spent will be unreliable without oversight from an independent audit agency.

"We are extremely concerned about the potential for a lack of statewide government transparency and accountability in the use of these vitally important funds," Wagner wrote to Phillip R. Herr, the federal agency's director of physical infrastructure issues.

Wagner listed Medicaid, low-income heating aid and weatherization assistance as examples of federally funded programs administered by the state that have "significant internal control weaknesses." He said a significant issue was the limited scope of information provided for the audits his own office has performed.