A new report by the CIA’s inspector general says the agency lied about the circumstances surrounding the shoot-down of a plane carrying American missionaries over Peru in 2001.

The Peru Air Force shot down the plane using CIA surveillance, killing missionary Veronica Bowers and her baby, and injuring the other members of the family on board. The intelligence agency worked with the Peru Air Force ostensibly to identify suspect drug trafficking planes and shoot them down.

The partially declassified report says,

In many cases, suspect aircraft were shot down within two to three minutes of being sighted by the Peruvian fighter — without being properly identified, without being given the required warnings to land, and without being given time to respond.

The program was suspended in 2001, but CIA officials characterized the shoot-down as a one-time mistake in an otherwise successful program. The probe says,

In fact, this was not the case.

The CIA program showed a “routine disregard of the required intercept procedures.” Besides lying to Congress, the report adds that top agency officials withheld information from National Security Adviser Condoleeza Rice and would not respond her direct questions.