Friends and family members of a 31-year-old American tourist who was killed while on holiday in Hungary have held a vigil to remember her. mourned their loss while a 37-year-old suspect was in custody Saturday. The victim, Mackenzie Michalski from Portland, Oregon, was reported missing on 5 November after she was last seen at a nightclub in central Budapest. Police launched a missing persons investigation and reviewed security footage from local nightclubs where they observed Michalski with a man later identified as the suspect in several of the clubs the night of her disappearance. Police det…