A federal jury last week convicted Sirewl Cox, a Canton real-estate broker, of fraudulently converting Dorchester and Mattapan apartments into condos using straw buyers in 2006 and 2007 the US Attorney's office in Boston reports.

Cox, 37, will be sentenced on Feb. 6 on numerous counts of wire fraud, bank fraud, and conducting an unlawful monetary transaction. His co-defendant, Lord R. Allah, pleaded guilty in April.

According to the indictment against the pair, they recruited bogus buyers for apartment buildings, then converted them into condos and then sold the units to still more straw purchasers, all the while collecting fees from lenders. In Dorchester, the pair went after 11 Roxton St., 148 Stanwood St. and 111 Fuller St.; in Mattapan, 153 River St.

Over the past three years, federal authorities have won a number of convictions or obtained guilty pleas in cases against real-estate brokers, lawyers and others who tried to make money off the neighborhood's foreclosure-filled property market.