context: In part because courts are reluctant to discourage cooperation between agencies, the mere fact of federal participation in an investigation does not suffice to establish an improper "working arrangement."
citation_a.signal: see
citation_a.identifier: 281 F.2d 344, 344
citation_a.parenthetical: explaining that FBI agents properly interrogated defendants who were in state custody because they had a "duty to endeavor to ascertain all the available facts about the federal crimes which they were investigating"
citation_a.sentence: See Coppola, 281 F.2d at 344 (explaining that FBI agents properly interrogated defendants who were in state custody because they had a “duty to endeavor to ascertain all the available facts about the federal crimes which they were investigating”).
citation_b.signal: see also
citation_b.parenthetical: finding FBI's participation (including conducting search) during execution of INS warrant did not "taint the administrative arrest"
citation_b.sentence: See also Barnett v. U.S., 384 F.2d 848, 857 (5th Cir.1967); Gaines, 555 F.2d at 624. Cf. Abel v. United States, 362 U.S. 217, 229, 80 S.Ct. 683, 4 L.Ed.2d 668 (1960) (finding FBI’s participation (including conducting search) during execution of INS warrant did not “taint the administrative arrest”).