The Obama administration is leaning toward keeping secret some graphic details of tactics allowed in Central Intelligence Agency interrogations, despite a push by some top officials to make the information public, according to people familiar with the discussions.

These people cautioned that President Barack Obama is still reviewing internal arguments over the release of Justice Department memorandums related to CIA interrogations, and how much information will be made public is in flux.

Among the details in the still-classified memos is approval for a technique in which a prisoner's head could be struck against a wall as long as the head was being held and the force of the blow was controlled by the interrogator, according to people familiar with the memos. Another approved tactic was waterboarding, or simulated drowning.