before disclosure the very fact they seek to obtain through disclosure. Such certainty of proof is not required as a foundation for obtaining the identity of an informer who might be helpful to the defense of the accused.
(People v. Castiel, 153 Cal.App.2d 653, 659 [315 P.2d 79]; see
People v.
Riser, 47 Cal.2d 566, 587-588 [305 P.2d 1].) The refusal to require such disclosure was prejudicial error.
If defendants are retried, the statements obtained from them while in police custody cannot properly be admitted in evidence over objection, since neither defendant was informed of his right to counsel or of his right to remain silent. (Escobedo v. Illinois, 378 U.S. 478, 490-491 [84 S.Ct. 1758, 12 L.Ed.2d 977]; People v. Dorado, ante, pp. 338, 346-347 [42 Cal.Rptr. 169, 398 P.2d 361].) Those rights attach when the criminal “process shifts from investigatory to accusatory.” (Escobedo v. Illinois, supra, 378 U.S. at 492; People v. Dorado, supra, ante, at pp. 348-349.) Thus, when the accused has been arrested and the authorities begin a process of interrogation that lends itself to eliciting incriminating statements, the accused is entitled to counsel. (People v. Stewart, ante, pp. 571, 577 [43 Cal.Rptr. 201, 400 P.2d 97].)
In determining whether the authorities are carrying out such a process of interrogation, we must consider “the length of the interrogation, the place and time of the interrogation, the nature of the questions, the conduct of the police and all other relevant circumstances.” (People v. Stewart, ante, pp. 571, 579 [43 Cal.Rptr. 201, 400 P.2d 97].) In the present case, after Agent Shirloh and Officer Barton arrested defendants and took them to the police station, they questioned defendants separately and together, intermittently from midnight until 7 a.m., with the assistance of an interpreter for the Spanish language. Shirloh put questions to both defendants in the form of accusations. He told Perez, for example, that some money marked for identification by the authorities had been found in his possession when he was arrested, and then asked him to reconsider his answers in light of such accusation. Shirloh testified that he repeatedly showed Perez photographs of a man because he “wanted to have on record . . . statements by him, pointed statements, [that] he did not know this man.” Both Perez and Morales made statements during these-predawn sessions. That afternoon, Shirloh, Barton, and a deputy district attorney took turns questioning Perez and elicited another statement. It is