Street beggars

Photo: Avik Adnan Siddiqui

The number of street beggars has increased enormously in the metropolitan Dhaka city, especially, in most of the traffic signals, foot overbridges, in front of mosques. Many of them are crippled (amputated foot or arm) walking with the support of crutch. Blinds are begging with the support of either son/daughter or a caring person.
Many are doing so, because of drug addiction or poverty.
My question is how these people are doing so? Is there any responsible authority to take necessary action and punish the people behind this business?