WASHINGTON – A Justice Department audit has found the FBI’s long-delayed computer upgrade is getting slower and costing more.

The FBI’s Sentinel program was launched to build a paperless case management system, costing $425 million. It was supposed to be completed by last December.

The system has faced numerous delays and extra costs since. And a new audit from Justice Department inspector general Glenn Fine says the bureau won’t even guess at when it will be done or how much it will cost, though they say it will be more than $451 million.

The FBI has struggled for years to modernize its computer systems. Bureau Director Robert Mueller recently told Congress he personally works on the Sentinel project every week, but that has not gotten it back on schedule.