A six-year-old girl helped put a knife-brandishing robber under arrest Tuesday night after the man had already successfully stolen money from two grown men. The Dan District Police Station registered two complaints on Tuesday by apartment owners in Ramat Gan, saying a man threatened them with a knife and took money from them. The 51-year-old robber, also a Ramat Gan resident, then moved on to a third apartment. After he knocked on the door, a little girl opened it. When he demanded she leave the house, she refused and said she would call the police. He then threatened her with a knife, but the child got hold of a broom and hit him with it. The man fled the scene, but after the girl described his appearance to the police, he was caught and arrested while still in possession of the knife he had used in the robberies. The man, who has a criminal record, was to be brought Wednesday to the Tel Aviv Magistrate's Court for a remand extension hearing.