Enamul and Rupon, joint general secretary of Gendaria Thana AL, were hiding in the house of one of their employees in Sobatta area, said Imtiaz Ahmed, Deputy Inspector General (Organised crime) of Criminal Investigation Department (CID) at its headquarters in the city.
A CID team also seized 12 mobile phone sets and Tk 40 lakh from their possession, he said.
The duo remained absconding since law enforcers raided their house at Gendaria in September last year and seized 8,072 grams of gold and Tk 5.5 crore in cash, Imtiaz said.
Four money-laundering cases were filed against them, he added.
Investigation showed that the siblings have 22 houses, mostly in old part of the city, 91 bank accounts where they have Tk 19 crore, and five cars, the DIG said.
See also: Drive against militancy, drugs, casinos to continue: Minister