WASHINGTON (AP) — The head of the Senate Intelligence Committee says the CIA improperly searched a stand-alone computer network established for Congress as part of its investigation into allegations of CIA abuse in a Bush-era detention and interrogation program.

Sen. Dianne Feinstein of California defended her committee's work and challenged the CIA on Tuesday as she sought to set the record straight amid various reports of disputes between Congress and the agency.

The California Democrat said the CIA searched the network this past January.

At issue is whether the CIA violated an agreement made with the committee about monitoring the panel's use of CIA computers. The CIA provided the computers to congressional staffers in a secure room at its headquarters so that the committee could review millions of pages of top secret documents.