Vijaybhai Vaghasia, 32, his wife Rekha Vaghasia, 30, and son Veer Vaghasia, 4, died in the incident.
Based on a complaint received from the students, the police were looking into the issue, an official attached to the Amar Colony police station said.
The family members of the woman, a labourer, have alleged that she did not get proper health facilities which led to the tragedy
The Union Cabinet meet chaired by Prime Minister Narendra Modi also approved setting up of a National Financial Reporting Authority (NFRA) as an independent regulator for the auditors.
He is survived by wife Kuldip Kaur Tiwana and son Gorki.
Top Indian javelin thrower Davinder Singh Kang has been suspended provisionally by the world athletics governing body after he returned positive for an anabolic steroid in an out-of-competition test conducted in November last year.