Delhi Police could invoke more criminal cases against Amritpal Singh Sachdeva, the man responsible for the deaths of 70 people who were killed in a building collapse on Monday.
Hindustan Times had reported that an embroidery unit, employing 25 child labourers, was also running from the fifth floor of the building. All of them, except one, are feared dead.
The Crime Branch of Delhi Police, which got Sachdeva's custody on Friday, will ascertain the quality of building material as well as the sources from where he procured them.
"We will be looking into the aspects of criminal negligence and the cause behind the structural collapse," said Ashok Chand, deputy commissioner of police (crime).
The police said they will seek the help of structural engineers also to help them establish the criminal negligence of Sachdeva. “We have to trail the source of building material like the cement bags that were used in the construction,” said a senior police officer.
Sachdeva has been arrested for selling spurious cement bags on 11 occasions earlier and was booked under the Essentials Commodity Act.
The police said the role of the policemen whom he bribed to carry on the construction work was also being looked into.
“We will be contacting the civic agency officials for files and documents pertaining to the building, if there are any,” said the officer.
Sachdeva reportedly told the police that he was part of an "established racket" where the "rates" for every policeman and civic agency official were fixed.
"He told us that he never knew he was doing anything wrong, he said he was doing what others in the area did and was a part of that," said the officer.
The Crime Branch will also be raiding the shops where Sachdeva purchased the building material.
Sachdeva, who first came to Delhi in 1973, started out as a grocery store owner and graduated into owning 21 properties across Delhi and Ghaziabad. During the interrogation, Sachdeva told the police that there were 40 rooms in the building and he used to charge R600 from each dweller.