They said that the authorities of the Society For the Welfare of the Intellectually Disabled Bangladesh (SWID-Bangladesh), Ramna Branch, have taken the initiative in the name of income-generating activities, ignoring the interest of the students with intellectual disability.

But the SWID authorities denied the allegations, saying that the playground will remain intact and the classes will be held at its office building adjacent to the school.

Meanwhile, the guardians urged the government and the donor associations to look into the matter and take necessary steps.

They alleged that the authorities have already handed over the property to a land developer for construction of apartments.

"Even we were not informed of it. They were more interested in their own benefit," said Alea Sultana, a guardian who is also a teacher of the SWID.

When the demonstrators tried to march towards the road outside, the SWID authorities intercepted them.

When contacted, Nurul Islam, senior executive officer of the SWID, said that during the construction work, the playground would be separated for the students.