"The slums in the city do not rise on their own, they are deliberately increased", Raj said while regretting that political parties were not acting tough against the errant corporators or MLAs.
"Whip is not cracked against those who are responsible for increasing the slums. Concerned ward officers or police officers are not suspended in this connection", he said.
Thackeray also said that if he found anybody from his party involved in such activities, he would dismiss that person.
Stating the infrastructure of the island city is not enough to sustain its mammoth population, he said, "looking at the increasing population of the metropolis there is not enough infrastructure for it", the MNS chief said.
Raj questioned as to why cooperation of private players was not sought for the development of the city.
"The developers and builders should be entrusted with the responsibility of maintaining roads and gardens in their areas which will be beneficial for the people, he said.
Raising concern towards the scarcity of BMC hospitals in the city, he said, these hospitals were mostly occupied by people from other states.
He also pressed for pulling down illegal structures on the banks of Mithi river, which was largely responsible for flooding in the city.