Petitioner Julius Corpus was convicted by a jury in a Texas state court of unlawfully possessing a narcotic drug. After an unsuccessful appeal to the Court of Criminal Appeals of Texas, 1 petitioner sought habeas relief in federal district court contending (1) that the prosecution knowingly acquiesced in the use of false testimony, (2) that the trial court erroneously refused to allow defense counsel to impeach the main prosecution witness, 2 and (3) that the trial court erred in admitting testimony concerning the prior use of narcotics by petitioner. The district court held an evidentiary hearing and denied the petition. We affirm.
At petitioner’s trial Mary Hernandez testified that while working as an undercover agent for the Austin, Texas Police Department she purchased a vial of ami-done from petitioner for $45.00 in cash. As brought out by defense counsel on cross-examination Mary was a former drug addict, prostitute and mental patient who decided to aid the police in apprehending narcotics pushers in the Austin area. The prosecution’s case at petitioner’s trial, as well as its case at the several other trials involving this undercover agent, 3 depended almost entirely on the jury crediting Mary’s testimony. When defense counsel asked Mary why she had decided to help the police she replied that she did so because she was “tired of living the life I was” and “seeing all those kids getting addicted” and “a lot of friends of mine being in the same position as I was”.
After petitioner had been tried and convicted, however, several new facts came to the attention of defense counsel. It appeared that Mary had a common law husband, Conrado “Cornbread” Hernandez, who had a long record of arrests and two prior felony convictions involv-ipg narcotics. On August 28, 1968, Con-rado had been arrested and charged with possession of narcotics paraphernalia. Bond was set at $25,000.00 since a conviction for this offense would have resulted in a mandatory life sentence under the Texas enhancement statute. 4 On September 8, 1968, the day before Mary went to work for the police department, Conrado’s bond was reduced to $1,000.00 and he was released from custody and never indicted for the offense. Subse *955 quently, on October 30, 1969, Conrado was indicted for burglary, but the indictment was dismissed at least in part because of Mary’s assistance to the police department.
These facts, petitioner contends on appeal, conclusively demonstrate that with the acquiescence of the prosecution Mary lied on the witness stand and that her real motive for aiding the police was not a concern for the welfare of other people but a desire to obtain favorable treatment for her husband. It is of course settled law that the prosecution may not remain silent and knowingly allow perjured testimony to go uncorrected when it appears before the jury. Giglio v. United States, 1972,
Petitioner also complains of the state trial judge’s refusal to allow defense counsel to impeach Mary Hernandez’ statement on cross-examination that she had never made a mistake in her prior identifications of narcotics pushers. Defense counsel proposed to show that Mary had identified one Jesse Serna as a man who sold heroin to her on October 8, 1968, when Serna was on that date committed to the Austin State Hospital. The purpose of introducing this evidence would have been to cast doubt upon Mary’s identification of the defendant on trial. We hold that this ruling was well within the discretion of the state trial judge. In the federal courts, as well as the Texas state courts, the trial court has the discretionary power to disallow the impeachment of witnesses on collateral matters. See United States v. Anderson, 5 Cir. 1970,
As to the other arguments petitioner advances concerning the exclusion of the impeaching evidence, we have carefully considered each of them and we find them totally without merit.
The final contention raised by petitioner is that he was deprived of a fair trial by the introduction of testimony from a police officer who stated, over objection, that he observed scars
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from needle punctures on petitioner’s forearms. Due to our limited power of review in habeas cases arising from state trials, we are not empowered to grant the writ where the error complained of was a mere evidentiary mistake unless the mistake was “material in the sense of a crucial, critical, highly significant factor”. Lawrence v. Wainwright, 5 Cir. 1971,
The denial of the writ of habeas corpus by the district court is hereby
Affirmed.
Notes
. Corpus v. State, Tex.Cr.App.1971,
. These two contentions are also asserted by four other petitioners whose cases were consolidated for oral argument with the
Corpus
ease. Our disposition of the two contentions on this appeal will, of course, be equally applicable to the appeals of the other petitioners. See Arechiga and Perales v. Texas, 5 Cir. 1972 [No. 72-1476, November 24, 1972],
. Approximately 45 individuals were prosecuted as a result of the undercover work of Mary Hernandez.
. Article 23, Texas Penal Code, Vernon’s Ann.
. See, e. g., Williams v. Allen, 5 Cir. 1971,
