"Dengue and malaria are spreading fast in the city due to dirty illegal slums which are occupied by migrants only," Raj Thackeray said on Sunday, Aug 1.
Mumbai has so far reported over 40 deaths due to Malaria.
During a programme held to mark fourth anniversary of the MNS students' wing, the MNS chief said the city had reported the disease earlier also, but now the situation is different and migrants are 'attacking' Mumbai and ruining it.
He also said that all public hospitals are occupied by outsiders while Marathi people have no place to go.
Besides attacking the migrants over the disease, Raj Thackeray slammed the 'crowd of outsiders', who are now dominating education field as well.
He said that migrant students are rushing here for admissions and the government is also allowing minority institutes to open colleges.
"Marathi students are refused admissions in these minority institutes and asked to pay money," he said.