At the direction of investigator G., police officers

At the direction of investigator G., police officers V. and L. detained S., who was suspected of committing theft with penetration into his home (Part 3 of Article 158 of the Criminal Code of the Russian Federation) and kept him in the premises of the internal affairs bodies for 5 days. After that, G. questioned S. as a witness, warning him of responsibility for giving false testimonies and for refusing to testify. Having promised S. to release him, as well as to terminate the criminal case in accordance with Article 75 of the Criminal Code of the Russian Federation, having demonstrated a falsified conclusion of a fingerprint examination, G. obtained a confession from the suspect (which was true). Later, however, G. drew up the detention record of S. (indicating that he had been detained on the day of the interrogation), charged him, prepared a motion to the court to apply a preventive measure in the form of detention (he received such a court decision a day later) . Subsequently, S. was convicted (a falsified expert opinion was not attached to the criminal case).
Give a criminal law assessment of the deed.