Officers responded to investigate a report of a male brandishing a knife in the station bus zone. Shortly after they arrived, they were flagged down by the victim, who reported that the suspect, who also brandished a gun, had just gotten into a taxi and was leaving the station. Officers stopped the taxi, and detained the male passenger. A replica firearm and a knife were found on the man's person. Pittsburg PD also responded to assist. The victim made a positive identification of the suspect and performed a citizen's arrest. The suspect was ultimately booked at the Martinez Detention Facility for brandishing a knife and a replica firearm. The suspect was issued a prohibition order prior to booking. TSOC notified.