Passage: At about 20 years of age, Capone left New York for Chicago at the invitation of Johnny Torrio, who was imported by crime boss James "Big Jim" Colosimo as an enforcer. Capone began in Chicago as a bouncer in a brothel, where he contracted syphilis. Timely use of Salvarsan probably could have cured the infection, but he apparently never sought treatment. In 1923, he purchased a small house at 7244 South Prairie Avenue in the Park Manor neighborhood on the city's south side for US$5,500. In the early years of the decade, his name began appearing in newspaper sports pages where he was described as a boxing promoter. Torrio took over Colosimo's crime empire after Colosimo's murder on May 11, 1920, in which Capone was suspected of being involved.Torrio headed an essentially Italian organized crime group that was the biggest in the city, with Capone as his right-hand man. He was wary of being drawn into gang wars and tried to negotiate agreements over territory between rival crime groups. The smaller North Side Gang led by Dean O'Banion (also known as Dion O'Banion) was of mixed ethnicity, and it came under pressure from the Genna brothers who were allied with Torrio. O'Banion found that Torrio was unhelpful with the encroachment of the Gennas into the North Side, despite his pretensions to be a settler of disputes. In a fateful step, Torrio either arranged for or acquiesced to the murder of O'Banion at his flower shop in October 1924. This placed Hymie Weiss at the head of the gang, backed by Vincent Drucci and Bugs Moran. Weiss had been a close friend of O'Banion, and the North Siders made it a priority to get revenge on his killers.Al Capone was a frequent visitor to RyeMabee in Monteagle, Tennessee "when he was traveling between Chicago and his Florida estate in Miami."

Question: Who took over after O'Banion?
Hymie Weiss