Two patrons reported that a male suspect tried to rob them of their cell phone and belongings while on the train. The suspect was described as a black male 35-40 years old, wearing a plaid shirt, camouflage jacket and carrying a stick. The suspect remained on the train to the SF Airport. Officers responded and located the victims at San Bruno Station. SFPD officers located a male matching the suspect description in Courtyard G and detained him. The victims reported that they had fallen asleep on the train and awoke to find the suspect going through their belongings. They challenged the suspect, who punched the male victim and then brandished a knife at the victims. The victims positively identified the suspect and he was arrested for attempted robbery. He was issued a prohibition order and was booked at the San Mateo County Jail.