. >> reporter: some of that support came from these two men, jeremy reichburg on the left and jonah on the right, a pair of brooklyn businessmen now under investigation amid allegations of pay-offs to police and possibly others. >> i met them around the time of the general election, had not known them previously, had spent very little time with them in the last year. >> reporter: investigators are combing through the mayor's 2013 campaign records to see how money was solicited from the brooklyn business community and if any individuals benefited. even as they look in to the actions of four nypd commanders from brooklyn south to see if they may have traded special treatment for cash or gifts. additional action. >> no, the investigation as i've mentioned is still ongoing and last week's action was based on information that we had the action that we took. >> reporter: police arrested he ran the hudson river cafe in harlem and is according to police the central figure in the probe. police say he ran a ponzi scheme from the restaurant. the mayor says he's done nothing wrong and will return

that he barely knows jeremy reichburg shown here on the left, and jonah recnits, two former businessmen currently under investigation along with the nypd's former chief of department. investigators are pouring through finance records from the mayor's 2013 campaign, amid questions about how donations from the city's real estate and business interests were solicited and whether individuals may have benefited. >> if i think my administration hasn't handled something well, i'll say so. things appropriately, i'll also say that. we are very, very careful about doing things in a legal and appropriate manner. we're very, very careful about disclosing the support we get. >> reporter: over the weekend, agents arrested hamlet peralta, accused of running a ponzi scheme. peralta ran the hudson river cafe in harlem and that investigation took agents to the two businessmen in borough park who raised money for the campaign. as well as the police commanders in south brooklyn suspected of granting favors in exchange for trips, gifts, or cash. nypd commissioner bill bratton. >> we took action last week. i